The fact that salmon swim upstream to spawn is an example of ________.

A) needs
B) incentives
C) motives
D) instinct

Salmon

A species of fish that is known for its remarkable lifecycle, which includes freshwater birth, oceanic life, and returning to fresh water to spawn.

Upstream

In a metaphorical sense, upstream refers to actions or interventions taken at the early stages or causes of a problem, rather than addressing its consequences.