Which choice is not one of the four purposes of a speech?

a.
to persuade

b.
to entertain

c.
to inform

d.
to evaluate

The answer to your question would be that the choice that is not one of the four purposes of a speech is the following one: To evaluate. That is, the correct option would be D.

The general purpose of a speech is to inform, to entertain, or to persuade an audience. All speeches are included in these three categories.

when i skim a text i look for anything i'm trying to find, like keys or clues or i just want to see if it is interesting to me.

explanation:

you have to tell us what you're talking about or it's impossible to answer.