Question

the underlying main idea of a lecture, or the meaning behind the overt message you hear, is referred to in the text as the
multiple choice
key concept.
meta - message.
outline.
significant topic.

Explanation:

A meta - message refers to the underlying main idea or the meaning behind the overt message. A key concept is a central idea but not necessarily the hidden meaning. An outline is a structural plan of the content. A significant topic is a major subject area.

Answer:

B. meta - message