which sentence or sentences have correct parallel structure? a visit to new york city can be expensive, but…

which sentence or sentences have correct parallel structure? a visit to new york city can be expensive, but you can save some money by avoiding taxis—simply walk, take the subway, or hopping on a bus is also a good option. a visit to new york city can be expensive, but you can save some money by avoiding taxis—simply walk, take the subway, or hop on a bus.
Answer
Answer:
B. A visit to New York City can be expensive, but you can save some money by avoiding taxis—simply walk, take the subway, or hop on a bus.
Brief Explanations:
In parallel structure, items in a list should have the same grammatical form. In option B, "walk", "take", and "hop" are all in the base - form verb, maintaining parallelism. In option A, "hopping" is a gerund while "walk" and "take" are base - form verbs, breaking parallelism.