Which one is a collective noun?

Explanation: - উল্লেখিত প্রশ্নে Gang হচ্ছে Collective Noun.
• Collective Noun:
A Collective Noun is the name of a number (or collection) of persons or things taken together and spoken of as one whole.
Example: Gang, crowd, mob, team, flock, herd, army, fleet, jury, family, nation parliament committee etc.
- Gang শব্দের অর্থ দল, যেটা দিয়ে সমষ্টি বুঝায়, তাই এটা Collective Noun.

অন্যান্য অপশনের মধ্যে-
Friendship & Honesty হচ্ছে Abstract Noun.
Doctor হচ্ছে Common Noun.

Source: High School English Grammar and Composition BY Wren and Martin.