According to one of the rubrics, eye contact for a persuasive speech should be . a.
intermittent
c.
indirect
b.
used at key parts of the speech
d.
direct

D.

Explanation:

The answer is D. because when you want to persuade someone during a speech, you need to show that you're aware of what you're saying and to be assertive. Being indirect or not showing eye contact at all will tell the person listening that you're not sure of what you're saying. Eye contact will not only make you look more professional but it could also help with the persuasion.

Hope this helps!