Answer:
When the person clearly states his opinion and provides specific examples - Most likely to persuade.
The person is older than the reader - Somewhat likely to persuade.
When the person shouts, uses lots of exclamation points, or accuses anyone who doesn't agree of being ignorant - Not likely to persuade.
Step-by-step explanation:
Persuasion is known to be an act of convincing someone to agree with your own point of view, make a decision or follow a course of action.
When opinions are clearly stated and examples are given specifically, the reader/listener tends to be convinced and persuaded. When an elderly person tries to persuade a younger person, such one is somewhat likely to be persuaded. Most times, it depends on the expertise and level of experience of the older person that can lead to making the persuasion achievable or not.
Shouting and accusing people because of their ignorance cannot lead to persuasion.