Question

which body system is important for memory and learning?
suprachiasmatic nucleus
biological clock
nervous system
immune system

Explanation:

The nervous system, especially the brain within it, is crucial for memory - formation, learning, and cognitive functions. Neurons and neural networks in the brain are responsible for encoding, storing, and retrieving information related to memory and learning. The suprachiasmatic nucleus and biological clock are related to sleep - wake cycles, and the immune system is mainly for defense against pathogens.

Answer:

C. Nervous System