An independent clause and a dependent clause.
An independent clause is a clause that can stand alone as a sentence (i.e., it expresses a complete thought). However, a dependent clause (or subordinate clause) is one that cannot stand alone as a complete sentence because it does not express a complete thought. Cause it is not a complete thought, it is dependent on being attached to an independent clause to form a sentence. The link between a dependent clause and an independent clause will often be a subordinating conjunction or a relative pronoun.
Theme is the central idea or meaning of a story. Theme in fiction is rarely presented at all; it is abstracted from the details of character and action that compose the story. It provides a unifying point around which the plot, characters, setting, point of view, symbols, and other elements of a story are organized.
The answer is D: Carrying
I believe that the answer is D. "Self-Reliance" is an example of a short memoir. It a record of events written by a person having intimate knowledge of them and based on personal observation.