Hello!
The correct answer to your question is D: talking.
Option A should only have a single d in the word 'findding'. The correct word should be "Finding."
Option B is the opposite of A. In this case, "stoping" should have two Ps instead of one. The correct word should be "stopping."
C is also incorrect. When a word ends with the letter E (just like hope), the E should be removed and completely replaced with ING. The correct word should be "hoping".
I hope this helps you! Feel free to comment or PM me if you have any additional questions!