Biology

The correct answer is testable.

The sentence should read:

"Scientists form testable hypotheses to answer questions."

Explanation of the options:

A.accurate  

While accuracy is important in scientific hypotheses, the word "accurate" doesn't fit the context of forming hypotheses. A hypothesis can be accurate or inaccurate, but the key characteristic of a good scientific hypothesis is that it is testable — meaning it can be verified or falsified through experiments or observations.

B.short  

Hypotheses don't need to be short. In fact, some scientific hypotheses can be complex or involve multiple factors. The length of a hypothesis is not as important as whether it is testable. So, "short" is not the right choice here.

C.mathemati...