Answer:
The structure used in the sentence is A: Compound Complex
Explanation:
Compound Complex is a type of sentence in which two or more sentences are joined by conjunctions and at least one of the sentences is complex. They have two 'independent clauses' joined by conjunction and one 'dependent' clause in the complex sentence.
In the given sentence, there are two clauses joined by the conjunction 'and'. The complex sentence has a dependent clause 'Besides the dinosaur bones'. Together when joined with the conjunction 'and', they make a 'compound complex' sentence.