The answer is c. hope this helps
Spider-mans, dog is very smart. He doesn't understand mirrors, however and barks at his reflection.
comma instead
Aha ahaha I had this question too I’m pretty sure I failed
The correct answer should be Find the meaning of the word "terminating" in an online dictionary.
Finding it in an online dictionary would be rather easy and quick, while it would also be the most correct since the world does not have a polysemic meaning in this context. Context can be tricky while finding antonyms would not be that useful.