Kelly has a meeting with Mark.When she arrives,Mark is on the phone.Mark tells the caller that his appointment has arrived and he will return the phone call later.This is an example of​

A) ​dialogue.
B) ​positive energy.
C) ​courtesy.
D) ​praise.

Courtesy

The showing of politeness in one's attitude and behavior towards others.

Positive Energy

The bringing or emanation of a positive, uplifting, and optimistic attitude that can influence oneself and those around positively.

Dialogue

A conversation between two or more people as a feature of a book, play, or movie, or a discussion aimed at resolution.