Respuesta :
The clause that best completes the sentence, thus creating parallelism is grabbed his book bag, (Option C).
What is parallelism?
Parallelism refers to a figure of speech in which at least two elements or more in a sentence or series of sentences share the same grammatical structure.
Another example of Parallelism is:
I like to read, write, sing, and paint.
Learn more about Parallelism at:
https://brainly.com/question/1466033