This is a tricky question, because there are actually two correct answers. A compound sentence is a sentence that contains at least two independent clauses. Having this in mind, the correct answers would be the first and the second sentence.
Answer:
I don't think college is worth it
Explanation:
Is college worth it? This is a question that gets an inordinate amount of attention in the media and among those interested in higher education.
The older oceanic crust is pulled beneath other plates and back into the mantle.
The origins of Western astronomy can be found in Mesopotamia, the "land between the rivers" Tigris and Euphrates, where the ancient kingdoms of Sumer, Assyria, and Babylonia were located. A form of writing known as cuneiform emerged among the Sumerians around 3500–3000 BC.
I would go for the last one, as it is recommending Arnold Jones by giving two qualities or traits he possesses. Hope this helps, and let me know if you have any further questions.