Dr. Reggie Lau carries out a study with a hypothesis that caffeine enhances performance in sports. He lets the experimental group consume 100mg of caffeine and does not give any caffeine to the control group. He then makes the participants sprint for 20 minutes. In this experiment, which of the following is the independent variable?
A) The group that does not get any caffeine
B) The group that consumes caffeine
C) The performance on the sprint
D) The duration of the sprint
Question 2
Alexis has always been keen on photography from a young age. As her parents and grandparents are doctors, they expect her to choose medicine as her career. However, she declares that she wants to be a travel photographer after considering the other career options available to her. In the context of James Marcia's identity statuses, Alexis is most likely in the _____ stage.
A) moratorium
B) foreclosure
C) identity achievement
D) identity diffusion
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