Passage: "Rain barrels cut runoff, a new report argued. After reading it, the town council required barrels on new homes. Runoff into Miller Creek fell by a third." What does the passage say influenced the council's decision?

Passage: "Engineers believed the levee could hold any spring flood. A March flood overtopped it in one night. The state's design manual then replaced 'any flood' with a hundred-year standard." How did the flood influence the engineers' idea?

Passage: "The library opened a homework center in September. That fall, absences dropped. The district credits its new bus route, which began the same month, for the attendance change." Which link does the passage actually assert?

Passage: "Nurse Oyelaran kept charts showing which wards flooded first. Her ward chief, at first skeptical, used the charts to move supply shelves upstairs. Losses in the next storm fell sharply." How did Oyelaran influence the ward chief?

Passage: "A study argued that shade lowers street temperatures. The city then planted 4,000 trees along bus routes. Two summers later, riders reported waiting outside more often instead of skipping trips." What chain of influence does the passage describe?

Passage: "For years coaches ran practice until players tired. New guidance held that recovery builds strength. Coaches here cut practice by twenty minutes and added rest days; two refused, citing tradition." How did the guidance influence the coaches?

Passage: "A power outage during finals week left an online exam unfinished for 300 students. The college now requires a printed backup for every exam. Enrollment rose that year for reasons the report does not name." Which influence does the passage assert?

Passage: "Marisol wrote that dams always harm rivers. Then she surveyed a reservoir where flows are timed to spawning runs. Her next article argued that timing, not the dam itself, decides the harm." How did the survey influence Marisol's idea?

Passage: "The village sits on a clay plain. Farmers had always burned the stubble. Soil tests showed that burning strips nitrogen. Within two seasons most farmers tilled the stubble under." Which sentence names the idea that changed the farmers' practice?

Passage: "Two proposals reached the board: cheaper buses and later start times. Sleep research showing that teens wake late persuaded the board, which moved first bell to 8:40. Bus fares stayed the same." Which idea influenced the board, and how?

Passage: "The auction was set to close at noon. A clerk, Devi Raghavan, saw two lots listed under one number and paused bidding. The correction added an hour, and the disputed lot sold for twice the earlier bid." How did the clerk influence the auction?

Passage: "After the wharf collapse, the harbor board inspected every pier. Owners of the two oldest piers rebuilt at once. Owners of the newer piers, told their timbers had passed, changed nothing." How did the collapse influence the pier owners?

Passage: "The council wanted a night market on Ferry Street. A traffic engineer's finding that the street floods after storms stopped the plan, and the market opened on higher ground at Bell Square instead." What influence does the passage assert?

Passage: "Coach Pryor timed sprints by stopwatch for years. A parent showed him video that measured stride length. He kept the stopwatch for races but used the video to fix two runners' form." How did the video influence Pryor?

Passage: "The mill closed in spring. That summer the river ran clearer. Biologists trace the change to a new upstream filter plant, not to the closing, since the mill discharged no sediment." Which link does the passage assert?

Passage: "Curators once dated the harbor wall by its bricks. When a dredge pulled up a dated timber beneath it, the wall's accepted age moved back forty years. Brick dating is now used only as a check." How did the find influence the curators' method?

Passage: "Ms. Alvarado told the board that the crossing was safe. After reading a student's six-week tally of near misses, she asked for a crossing guard. A traffic study a month later agreed with her." What changed Alvarado's position?

Passage: "A ban on plastic bags was argued as litter control. Stores switched to paper, and litter counts fell. Paper cost more, so two small groceries began charging for bags." Which chain of influence does the passage describe?

Passage: "The observatory added a second telescope in June. Visits doubled by August. Staff credit a school partnership begun in May; the second telescope is not open to visitors." Which link does the passage actually assert?

Passage: "Aid workers once counted meals served. An economist argued that meals say nothing about hunger between visits. The agency now records how many days a household goes without buying food." How did the argument influence the agency?