According to Gardner's model, a person who is "people smart" is exhibiting what type of intelligence?

Interpersonal

Explanation:

Howard Gardner has given eight different types of intelligence including logical/mathematical, naturalist, verbal/linguistic, bodily/kinesthetic, visual/spatial, intrapersonal, musical, and interpersonal.

Interpersonal intelligence: The term interpersonal intelligence is defined as the capability of an individual to interact and understand effectively and properly with the other person. The interpersonal intelligence includes the nonverbal and verbal communication, sensitivity of an individual to know the temperaments and moods of the other person, etc.

In the question above, the given statement signifies the interpersonal intelligence.