Sally went to her ten-year high school reunion. There she saw her first boyfriend. Upon seeing him, she then remember the night that they had their first kiss. According to Freud, the memory of her first kiss was stored in

Episodic memory

Explanation:

Episodic memory is the actual memory of a single occurrence that a person has, and it would be different from the recall of the same encounter by someone else, it is a kind of long-term memory involving conscious recall of past experiences and their meaning.

Sally on seeing her first boyfriend remembers the night they had their first kiss, this is a personal experience/knowledge and it is stored in her episodic memory. Episodic memory reflects the capacity to recall past events in the temporal and spatial sense, it is the recollection of things every day that can be clearly mentioned or conjured.

answer; the basal forebrain;