The process that first detects an external stimulus is:

A) perception.
B) sensation.
C) interpretation.
D) cognition.

Cognition

The intellectual activity of obtaining insight and understanding by means of reflection, experiences, and sensory perception.

Perception

The process by which individuals interpret and organize sensation to produce a meaningful experience of the world.

Interpretation

The act of explaining the meaning of something, particularly in the context of translating languages, understanding texts, or analyzing art.