C their is allot better, and next time run each word through the sentence.
Their names come from Greek roots, well most anyways, and those words were warped to become the names we see today
"The" boy was walking his dog
Answer:
sentence parts below
Explanation:
My student wrote during his free time
My student -subject
student- simple subject
wrote- predicate
during his free time- prepositional phrase
during- preposition