Are " Presidential conventions occur every four years during the summer." a simple sentence, compound sentence, complete sentence, or compound-complex sentence?

The sentence "Presidential conventions occur every four years during the summer" is a simple sentence.

Explanation:

A simple sentence is formed by an independent clause. An independent clause has a subject and a verb, and is able to express a complete thought on its own. The sentence we are analyzing here is a simple sentence. It consists of only one clause, and that clause is independent. It makes sense on its own, not needing another clause to add information or context.

NOTE: If this question allows for more than option to be selected, then we can also choose "complete sentence" as a correct option. A complete sentence has a subject and a finite verb, which is the case here.

a: that she is losing interest in her relationship with arobin just took !

it would be d because the however is more proper and the comma is placed in the right spot