Answer:
The correct answer is A. simple.
Step-by-step explanation:
The sentence Several people have helped me in so many ways is a simple sentence because it has only one predicate (=verb) "have helped." This means that it consists of one independent sentence/clause.
A simple sentence always has one predicate; a compound sentence has two simple sentences; a complex sentence has one independent sentence and at least one dependent one; a compound-complex sentence contains at least two independent clauses and at least two dependent ones.