Final answer:
The subject of this question is Hypothesis Testing. The correct answer is d) Research question.
Step-by-step explanation:
The subject of this question is Hypothesis Testing.
Answer:
The correct answer is d) Research question. The question asked is whether eating breakfast causes good grades, which is a research question. The other options are not applicable for this question:
a) Hypothesis testing: This is a method used to test a hypothesis or make predictions based on observed data.
b) Experimental condition: This refers to the group or condition in an experiment that receives the treatment or intervention being tested.
c) Control group: This refers to the group in an experiment that does not receive the treatment or intervention being tested and is used as a comparison to evaluate the effects of the treatment.
Therefore, the correct answer is d) Research question.