Which word in the sentence is a gerund? reading is a great habit that i am enjoying every night. a: enjoying. b: night. c: reading. d: habit.

Only "enjoying" and "reading" are possible options: a gerund has an ending -ing. - the other words don't have this ending!

Here "Reading" is the Gerund, and "enjoying" is a part of the verb phrase (option C)

The answer can be a. enjoying or c. reading because a gerund means a word ending in "ing"

Is there more info you can give?

Allusion and illusion. an allusion is an indirect reference, whereas an illusion is something that is unreal or incorrect. each of the nouns has a related verb form: allude “to refer indirectly to,” and illude (not a very common word), which may mean “to delude or deceive” or “to subject to an illusion.”