Hayden has placed a cricket in a terrarium. He is interested in learning about cricket behavior. Which of the following is a question about cricket behavior that Hayden can answer through a scientific investigation?

A.
Does a cricket prefer to live in the wild or in a terrarium?
B.
Do crickets make better pets than lizards?
C.
How will the cricket feel if the terrarium is left in a dark room for several days?
D.
How will the cricket behave if another cricket is introduced into the terrarium?

D. How will the cricket behave if another cricket is introduced into the terrarium?