Answer:
C. Misplaced modifier
Explanation:
This can be seen as a dangling modifier. A modifier is considered dangling when the sentence isn't clear about what is being modified. In the sentence in question, 'jumping from a great height' states an action, but does not state or make clear the doer of that action.
No they aren't proper to use in writing class they are considered slang. It would show your teacher that your not interested in sounding educated and proper.
Hope this helps!
