Answer:
A,
Step-by-step explanation:
This problem wants to find a credible source when finding treatments for garden insects. Why? We need it to be credible because it has to be most true and unopinionated, while staying as informative as possible. The best option is A, because while every other source is a encyclopedia article (Wiki is not reliable, also, it doesn't talk about treatments for insects), Web site (does not deem credibility and only talks about the types of insects in gardens) and an interview with some random person (who may not have had the expertise on treating insects.)