Which sentence demonstrates parallel structure?

Which sentence demonstrates parallel structure?

• A. I like hiking, to swim, and biking.
• B. I like hiking, swimming, and biking.
• C. I like to hike, swimming, and to bike.
• D. I like hiking, to swim, and to bike.

Answer: (B)

Parallel structure means keeping the same grammatical form in a list after a verb like “like.” After this verb, using the same form for each item keeps the sentence balanced and smooth. In the sentence with hiking, swimming, and biking, every item is a gerund ending in -ing, so all parts match and read clearly. The other options mix different forms (some -ing, some to-infinitives), which breaks the pattern and sounds off. So the sentence with hiking, swimming, and biking demonstrates parallel structure.

Parallel structure means keeping the same grammatical form in a list after a verb like “like.” After this verb, using the same form for each item keeps the sentence balanced and smooth. In the sentence with hiking, swimming, and biking, every item is a gerund ending in -ing, so all parts match and read clearly. The other options mix different forms (some -ing, some to-infinitives), which breaks the pattern and sounds off. So the sentence with hiking, swimming, and biking demonstrates parallel structure.