Answer:
Comma splice
Explanation:
The comma is used for many things such as to separate items in a list, to set off nonrestrictive phrases or clauses, to set off nouns of direct address, to indicate a pause, among others. However, it is not used to connect two independent clauses. When this happens the sentence has "a comma splice."
Independent clauses (clauses that express a complete thought) should not be separated by a comma, but by conjunction (like and, but, or, nor), a period or a semicolon. Therefore, in order to correct the comma splice in the sentence provided, we must remove the comma between the two independent clauses: "Jessica left the farm quickly" and "she arrived at the school an hour later," and place a period, a semicolon or a conjunction instead.
