When a consumer expresses dissatisfaction about a product to friends, and/or boycotts the store, this is termed:

A) preference response.
B) private response.
C) second-party response.
D) third-party response.

When a consumer expresses dissatisfaction about a product by telling friends or boycotting the store, it is considered a private response. This type of response involves actions taken by the consumer that are not directly communicated to the company or involve formal entities like regulatory bodies, but rather are shared within the consumer's private network or result in personal decisions like boycotting.