Answer:
a) an article on the Environmental Protection Agency's website.
Step-by-step explanation:
a) an article on the Environmental Protection Agency's website.
- solid evidence and research results.
b) a graduate college student's blog entry.
c) a website owned by a pesticide company.
- this is a selling market tool with no concrete evidence.
d) an article on a pesticide company's website
- again, no concrete evidence.