A common approach to studying informal logic is to start with logical fallacies.

Which is nothing but a very obvious logical fallacy, and not worth arguing against.

What is wrong with you, embracing logical fallacies to avoid taking responsibility for your behavior?

The logical fallacy is believing that this time their arguments will win the day.

It is a logical fallacy because Person A never made that claim.

If we're going to get into logical fallacies, who are these "many people"?

It is a type of logical fallacy: a bad argument that makes no sense.

This is actually the standard example for a logical fallacy.

In this setting, their usage can usually be classified as a logical fallacy.

If the two possibilities in question are mutually exclusive, this is not a logical fallacy.