The great hall is open to the public, you must reserve a spot in advance.

how is the comma used incorrectly in the sentence above?

the comma attempts to separate a compound predicate.
the comma attempts to join two independent clauses.
the comma attempts to set apart an essential element.
the comma attempts to separate a compound subject.

The comma attempts to join two independent clauses.

Explanation: Commas are not enough to join two independent clauses into a single sentence; the right punctuation mark for that function is the semicolon. All other answer options are incorrect because, in this case, the comma is not separating any part of an independent clause.

ur mom

explanation:

the use supports it by making it seem like the dictators are not bad to the people when the truly are.