Question

select the best answer for the question.
a student conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all.

1. in the experiment described in the scenario, whats the variable?

a. the amount of sunlight each plant receives

b. the type of music each plant listens to

c. the type of soil in which each plant is potted

d. the amount of water each plant receives

mark for review (will be highlighted on the review page)

Explanation:

In an experiment, the variable is the factor that is changed or manipulated. Here, the student keeps sunlight, soil type, and water amount constant (controlled variables) while changing the type of music each plant listens to (Plant A: classical, Plant B: rock, Plant C: country, Plant D: none). So the variable is the type of music.

Answer:

B. The type of music each plant listens to