Which of the following correctly describes this sentence?

It looms menacingly over the road from the roof of a farmhouse, a flying reptile with a seven-foot wingspan.

A. Simple B. Complex C. compound D. compound-complex

I felt it was a simple sentence.

Yes. It's a simple sentence.

To determine whether the given sentence is simple, compound, complex, or compound-complex, we need to understand the structure of each type of sentence and apply it to the given sentence.

A simple sentence consists of one independent clause, which means it has one subject and one predicate. There are no dependent clauses in a simple sentence.

A compound sentence is made up of two or more independent clauses joined together by a coordinating conjunction (e.g., for, and, nor, but, or, yet, so). Each independent clause can stand alone as a complete sentence.

A complex sentence contains one independent clause and at least one dependent clause. The dependent clause cannot stand alone as a complete sentence because it relies on the independent clause.

A compound-complex sentence includes two or more independent clauses and at least one dependent clause.

Now let's analyze the given sentence:

"It looms menacingly over the road from the roof of a farmhouse, a flying reptile with a seven-foot wingspan."

This sentence consists of two independent clauses: "It looms menacingly over the road from the roof of a farmhouse" and "a flying reptile with a seven-foot wingspan." However, these clauses are not joined by a coordinating conjunction, so it is not a compound sentence.

There are no dependent clauses in the given sentence, so it is not complex or compound-complex.

Hence, the correct answer is A. Simple sentence.