Answer:
The answer is A. Conceptual replication
Explanation:
Mark decides to conduct a variation of the original study in which he measures participants' ability to solve verbal analogies as the cognitive task instead of measuring their ability to solve math problems. He finds that people who drink caffeine beforehand solve more verbal analogies than those who drink water beforehand, suggesting caffeine consumption causes improved cognitive performance. This study is known as a conceptual replication
Its a tilt or about 23.5 degrees tilted. The hemispheres receive different amounts of solar energy due to the rotation of earth and the way the earth is titled towards the sun.
Answer:
I think that it is the first option. If I'm wrong, then okay.
Explanation:
I really hope that it might help in some way. :)