According to research, which of the following aspects of language is the least susceptible to the effects of age?

Psychosomatic illnesses may be the result of preverbal constructs

Indicate whether the statement is true or false.

Mirror neurons in a monkey's brain do NOT fire when the monkey:

A) learns despite awareness of intentionality. B) observes the intentional action of another monkey. C) observes the intentional action of a human. D) performs an intentional action.