Which noun refers to intense enthusiasm or ardor?

• A. Volatile
• B. Waver
• C. Whimsical
• D. Zeal

Answer: (D)

This item tests understanding of a noun that conveys a strong, ardent enthusiasm. Zeal captures that exact sense: it denotes passionate energy and unwavering devotion toward a cause or goal. It’s a standard word used to describe intense fervor and eagerness.

The other terms describe different ideas. Volatile refers to something unstable or likely to change rapidly. Waver means to hesitate or flip between options. Whimsical describes playful, capricious, or fanciful behavior. None of these convey the intense, fervent devotion that zeal does, so zeal is the best fit. For example, her zeal for learning kept her studying late into the night.