A simple sentence has only one independent clause. A compound sentence has at least two independent clauses. A complex sentence has one independent clause and at least one dependent. A compound-complex sentence has at least two independent clauses and one dependent.
Having this in mind, 1. is a complex sentence, and 2. is also a complex sentence.
Positive and Negative Connotations. ... For example, the words childish, childlike and youthful have the same denotative but different connotative meanings. Childish and childlike have a negative connotation as they refer to immature behavior of a person. Whereas, youthful implies that a person is lively and energetic.
B - too specific for the purpose
While that would be a good topic sentence, it is far too specific for the thesis of an entire essay
