Answer:
The difference between the need and the opportunity for rhetorical action is that need promotes the speaker to speak on an issue whereas opportunity restrains them.
Explanation:
The rhetorical situation can be defined as situation in which the rhetor seeks possible means to persuade and involve people in the rhetoric.
The rhetorical situation is formed by <em>exigence, audience, and contraints.</em>
Exigence can be defined as a situtation which contributes to the need of writing. Exigence is a situation that shows the writer need to write to make the audience aware of something. Thus need (exigence) prompts the speaker to write and speak on an issue or situation that should be resolved.
Contraints, on the other hand, are those situations that restricts the speaker from speaking. These contraints are the rules that seize the speaker. These contraints include opportunities, limitations, time limit, etc. So, oppotunities tend to restrict the speaker from speaking freely about the topic.
