“What color is a great horned owl?” The question reflects an opinion.
The question addresses a gap in knowledge.
The question does not require testing to answer.
The question asks about phenomena that cannot be measured.

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water