That sentence is an example of parallel structure.
When there is repetition of a specific grammatical form in a sentence, parallelism or a parallel structure is produced. This occurs when you mantain the same pattern for every compared word or idea in your construction. This makes the idea easier to follow by the reader.
Answer:
can i ask which lesson this question belongs to?
Answer:
There were lots of riders.
Explanation:
The riders would take short trips and handed off the letters to others. This allowed the horses to not tire out.
The answer is A I think♀️