The answer that is a collective noun is cattle.
A collective noun refers to numerous entities, and cattle can refer to many cows, for example. You cannot say cattles, which is another way to think of collective nouns - they don't have plural form.
Julius caesar is the answer
Hi, the answer is C - holocaust. Catholic is a religion, aperture means a hole or a gap, panacea means cure, so the only option left is holocaust. "Holos" in Greek means whole, and "kaustos" - burned.