Laura performed an experiment to determine the effect of nitrogen-rich fertilizer on plants. The procedure she used in her experiment is shown below.
Select a plant for the project

Add 5 Tbsp. nitrogen-rich fertilizer to the plant's soil each week

Measure plant growth each week

Calculate the total growth at the end of a 6-month period

What is wrong with Laura's experiment?
A.
She did not set a time limit on how long she was going to continue fertilizing the plant.
B.
She did not measure the plant's growth daily.
C.
She did not use a second plant as a control.
D.
She did not measure how much fertilizer she was giving the plant.