Question

A researcher wants to investigate the impact of salt water on the growth of plants. Which of the following would be the best hypothesis for this experiment?(1 point)
Responses

I will add salt water to plants and observe how they grow.
I will add salt water to plants and observe how they grow.

Plants need water to grow, and they should also be exposed to sunlight.
Plants need water to grow, and they should also be exposed to sunlight.

If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.
If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.

I think salt water will help plants grow taller.

Answer 1

The best hypothesis for this experiment is:

**If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water.**

This statement is clear, testable, and establishes a cause-and-effect relationship between the variable (salt water) and the outcome (plant growth).