D) Len's favorite pastimes are listening to music, going to baseball games, and hanging out with his friends.
Explanation:
Parallel structure/parallelism in writing is the use of words in a way that is not repetitive and uses the same grammatical pattern to make the sentence easy to understand without ambiguity.
Therefore, the sentence that correctly uses parallelism is option D.
This story was taking place around sunset. I can tell because at the beginning of the story it mentions the horizon casting red clouds and at the end it says it's seven thirty.
