Question

Crayfish, like the one seen here, lives in water. Bennie wondered how changes in temperature would affect the movement of crayfish. He wanted to design an experiment to test his idea. What would be Bennie's manipulated variable in the experiment?
Responses

A age of the crayfishage of the crayfish

B temperature of the watertemperature of the water

C movement of the crayfishmovement of the crayfish

D amount of water the crayfish is placed inamount of water the crayfish is placed in

Answer 1

B — temperature of the water.

(That's the manipulated/independent variable; movement of the crayfish is the responding/dependent variable.)