Question

her dancing is great.
noun
verb
adjective

Explanation:

In the sentence "Her dancing is great", "dancing" here functions as a noun (a gerund, which is a verb - ing form acting as a noun) representing the action of dancing as a thing. A verb would be used to describe an action being done (e.g., "She dances"), and an adjective describes a noun (e.g., "great" is an adjective here). So "dancing" is a noun in this context.

Answer:

noun