I'm not sure if there were specific answer choices but using complex words actually makes your statement rather unclear, especially assuming they are words the average person wouldn't know or understand.
Answer:
Fear is a natural response for most people when responding to danger. Although, healthy fears can turn into unhealthy fears, which can lead to dangerous and violent behaviors.
Explanation:
The missing word is a verb.
Simply choose an appropriate verb that makes sense.
Examples:
placed
pushed
will move
A. Love makes people more willing to change and face obstacles.