Correct Answer: Animosity

Solution : The correct choice is the fourth option .

Animosity is the right choice because it succinctly captures the essence of " strong hostility ". It refers to deep-seated, intense dislike or enmity between individuals or groups.

The meanings of the other options are as follows:

• Animalistic means relating to or characteristic of animals; behaving or appearing like animals.
• Anonymity is the state of being anonymous; having an unknown or unacknowledged identity.
• Comity means mutual courtesy and civility; friendly and cooperative relations.