Question

A scientist wants to determine which fertilizer is more effective—Fertilizer X or Fertilizer Y. The best way for her to proceed would be to design an experiment with

three groups of plants—a group fertilized by X, a group fertilized by Y, and a control group with no fertilizer.

two groups of plants—a group fertilized by Y and a control group with no fertilizer.

two groups of plants—a group fertilized by X and a control group with no fertilizer.

three groups of plants—a group fertilized by X, a group fertilized by both X and Y, and a control group with no fertilizer.

Answer 1

@OregonDuck

Answer 2

@Luigi0210 @MightyChondrion

Answer 3

@TOMY12345

Answer 4

@AliMaeHemmings

Answer 5

the answer was A