Question

is submitting a classmates work with their permission is plagiarism true or false

Answer 1

True. Submitting a classmate’s work as your own is plagiarism even if they gave permission. Plagiarism is presenting someone else’s work or ideas as yours. The only exceptions are when collaboration or using that work is explicitly allowed (e.g., a group assignment or clear instructor permission) — otherwise always do your own work or get explicit, documented approval and cite contributors.