Question

1. sally wants to test how the type of light affects the height of bean plants. she uses three different types of light bulbs: led, incandescent, and cfl. she exposes the plants to the lights for the same amount of time each day. she also plants the seeds in containers that are the same size, with the same type of soil, and she waters them with the same amount of water each day. she measures the height of the plants using a ruler and records the growth each day. which of the following is the independent variable in the experiment? the type of plant the height of the plant the type of light the amount of light

Explanation:

In an experiment, the independent variable is the factor that the experimenter changes or manipulates. Here, Sally is changing the type of light (LED, incandescent, CFL) to see its effect on the height of bean plants. Other factors like the amount of light, the type of plant, and the height of the plant are either controlled (kept the same) or are the dependent variable (the outcome being measured).

Answer:

the type of light