When a speaker tunes a message to suit an audience and, in the course of tuning the message, the speaker’s subsequent memories and impressions about the topic change, this effect is known as:

Saying is believing

Explanation:

Saying-is-believing occurs when a particular message is being tailored on such a way that the message will be able to suit the audience. By doing so, the impression of the communicator who's passing the message changes and is tailored towards the new message that is being passed.

In the question above, this situation is known as saying is believing.

answer; (d) anthropology;

true because they can bargain