Which words in the sentence are the adverb clause?

Because I am going to my dance class soon, I'll have a light snack now.

A. I'll have a light snack

B. a light snack now

C. am going to my dance class soon

D. because I am going to my dance class soon

Among the choices provided above, the correct adverb clause in the sentence is:

D. because I am going to my dance class soon

Adverb clause begins with a subordinating conjunction such as because, although, if, and others. This clause functions as as adverb as the name suggests and it modifies verbs, adverbs, and adjectives.