Collective nouns are nouns that are normally in its singular form but that refers to more than one person, animal, thing or concept considered as a single entity because they share one or more characteristic.
"Congregation" is an example of a collective noun because this noun it's singular but it refers to two or more persons organized for some specific purpose.
Some other examples of collective nouns are <em>team, class, herd, flock, gang, mob, group, </em>and<em> family.</em>
The answer is C, because you can still do "long line fishing" as there is plenty of fish in the sea(not trying to be funny), but switching to vegetarianism for everyone because it has more benifits is illogical, as some people are allergic, or they simply can't stick to that type of lifestyle.
