Nicole and Camille are synchronized swimmers for their college swim team. They often work long hours to ensure the movements in their routine are perfectly timed. What part of their brains must Camille and Nicole rely on most?

Answer: Camille and Nicole must rely on the cerebrum

Explanation:

Since Camille and Nicole are synchronized swimmers, there is no doubt that they will require the following:

- movement of legs and arms, which are voluntary actions controlled by the cerebrum

- proper reasoning and judgment for perfectly timed dives, which are controlled by the seat of intelligence - the cerebrum

- long hours of practice to perfect learning, and learning of information is also controlled by the cerebrum.

Thus, both Camille and Nicole must rely on the parts of the brain called cerebrum