Answer:
B
Explanation:
Parallelism refers to the repetition of elements that share the same grammatical pattern. In order for parallelism to take place there needs to be a single subject, situation that occurs in option B, the subject being Emma. Additionally, we are informed what actions happened in her English composition class. Since the actions are completed, the use of the past form is necessary; both learned and appreciated are verbs in past which confirms the parallelism between the two actions.