Question

a group of students wants to find out how different types of liquids affect plant growth. they water three plants with water, soda, and juice. what could they do creatively to improve their experiment? a use more soil b water the plants less often c add more plants and repeat the tests d grow them in the dark

Explanation:

Increasing the sample size (more plants) and repeating tests improves experiment reliability. Using more soil or watering less often doesn't directly address the impact of different liquids. Growing in the dark would introduce a new variable and not improve the study on liquid - plant growth relationship.

Answer:

C. Add more plants and repeat the tests