WILL GIVE BRAINLIEST IF CORRECT!!!!!!!!!!

Jerry is researching dog breeds for a science project. He begins by using keywords in a search engine. How could Jerry alter his strategy to locate more credible information?

A. He could use the words OR or NOT to narrow his search.
B. He could look for .com websites that contain basic information.
C. He could search his bookshelves for his grandfather’s old books on dog breeds.
D. He could use a book on dog breeds and then use keywords from it to search an online research database.