Answer:
B. It asks testable questions.
Step-by-step explanation:
This is the correct answer because if you are doing a science project and you are writing your notes down as you do it because some one else is gonna use those notes to do the exact project you don't want your opinion in it it needs to be testable like. Can dogs see colors? Is a testable question. Are dogs or cats better? Is not a testable question its an opinion question.
Hope this helps!