Certainly! In the given question, an interjection is a word or phrase used to express emotion. Let's break down the options:
1. Is - This is a verb, not an interjection.
2. Hunting - This is a verb, not an interjection.
3. Acrimonious - This is an adjective, not an interjection.
4. Wow - This is the correct answer. "Wow" is an interjection commonly used to express surprise, amazement, or excitement.
Therefore, the interjection in the list provided is "Wow" (Option D).