what is the gerund in this sentence?
Spelling is not one of humbug favorite activities.
Spelling***
is
Humbug
favorite
Yes, right.
What are the answers
In the given sentence, the gerund is "spelling."
To identify the gerund in a sentence, you need to understand that a gerund is a verb form that ends in "-ing" and functions as a noun.
In this case, "spelling" is the gerund because it is a verb form ("spell") that ends in "-ing" and is acting as a noun by being the subject of the sentence.