adverbial clause question!!!!

Which of these sentences contains an adverbial clause?

He told me where I could get some coffee.

What she pointed out is very significant in these times.

I do not know how to invest my money.

Most animals thrive where they can find food easily.

Question

adverbial clause question!!!!

Which of these sentences contains an adverbial clause?

    He told me where I could get some coffee.

    What she pointed out is very significant in these times.

    I do not know how to invest my money.

    Most animals thrive where they can find food easily.

anonymous · Answer

Three rules of adverb phrase: 
First, it will contain a subject and verb.
You will also find a subordinate conjunction that keeps the clause from expressing a complete thought.
Finally, you will notice that the clause answers one of these three adverb questions: How? When? or Why?