They are abstract nouns. Abstract nouns include things like emotions. They are not physical but do exist.
The trip to Los Angeles with my family and friends was amazing!
D. it clearly connects ideas
Parallelism is when the same grammatical or sentence structure is used for a list of ideas or items. By using a similar grammatical structure the reader's brain automatically makes a connection between the ideas because of the similar structure. Caesar's famous line "I came. I saw. I conquered." is an example of parallelism. Each of the sentences has the format subject-past tense verb.