$2.$After the students define the problem, they need to decide what to do next.

Student A suggests they read about various types of bread mold and other factors besides light that may affect the rate of growth of the mold.

Student B suggests they define their hypothesis.

$2$a$.$Identify which student's suggestion adheres to the principles of the scientific method: Student A or Student B$?$

Student A

Student B

$2$b$.$Using one or more sentences, explain your choice and reasoning in your response for $2$a$.$ Think about the principles of the scientific method as you respond.