Question

where is the suprachiasmatic nucleus (scn) located?
in neurons
the amygdala
the hypothalamus
the pineal gland

Explanation:

The suprachiasmatic nucleus (SCN) is a group of neurons in the hypothalamus, playing a key role in the circadian rhythm. Other options: Neurons are cells, not a location; amygdala is for emotions; pineal gland secretes melatonin.

Answer:

The hypothalamus