Question

what is the controlled variable?
o coconut juice
o the amount of coconut juice used
o water
o the amount of water used
o whether coconut juice or water was used
o side of shower sprayed with coconut juice
o side of shower sprayed with water
o 2 sides of the same shower are used in the experiment
o the amount of slime after 3 days

Explanation:

A controlled variable in an experiment is kept constant to ensure that the results are due to the independent variable. In a shower - related experiment comparing coconut juice and water, using the same shower (2 sides of the same shower) ensures that external factors related to the shower environment are consistent.

Answer:

2 sides of the same shower are used in the experiment