Answer:
Simple sentence
Step-by-step explanation:
Every sentence must contain a subject and predicate and express a complete thought. Independent clauses are clauses that can stand alone as sentences, which means that they possess all of these elements. Dependent clauses don't, which is why they can't stand alone.
A simple sentence is a sentence that consists of one independent clause.
A compound sentence is a sentence that consists of at least two independent clauses.
A complex sentence is a sentence that consists of one independent clause and at least one dependent clause.
The given sentence is an example of a simple sentence. It consists of one independent clause. Its subject is my mother and the predicate is baked cookies and chocolate cupcakes. That is one subject and one predicate, which means that this is one independent clause.
This is why the first option is the correct one.