Lets make this simple.
Installing equipment and sharing the information with residents of Polvin -> Reduce the risk of accidents caused by careless drivers
Falsification-Installing quipment and sharing info will not lead to reduction in accidents
What if, the accidents are caused by people staying out of the town
Assumption- Most accidents are caused by people of the town
Evaluate-The percentage of drivers who drive through this intersection that live in Polvin.
(A) The percentage of people living in and around Colvin who have been involved in accidents at the intersection. ->The % of people living in and around Colvin already involved in an accident won't help us predict that the plan is success or failure. If this option would have been the %age of people jaywalking then it could have been an evaluate
(D) The percentage of cars that drive through the intersection that are involved in accidents. -> Incorrect because whether that percentage is 1% or 50%, the only thing that matters is whether the percentage will drop.
(E) The percentage of drivers who drive through this intersection that live in and around Colvin. CORRECT