The statement that is a hypothesis is "If the temperature increases, then the crickets will chirp more ( D )".
Option D is an hypothesis because it is assumed on the evidence that as there is an increase in temperature, the chirping increases. It is not conclusive but it is a thought.
Option A is a theory, because it contains a hypothesis with a fact. The hypothesis being the warmer it gets the chirping happens and the fact being able to hear crickets in summer. Option B is a question. Option C is just a personal preference because cooler is a slang for I like it.
Therefore, the statement that is a hypothesis is "If the temperature increases, then the crickets will chirp more ( D )".
To know more about hypothesis
https://brainly.com/question/17173491
#SPJ1