Answer:
A. adjective clause
Explanation:
The function of the clause is to describe the person; thus, the clause functions as an adjective. An adjective describes a noun or a pronoun.
Then she tells him her plan: while Duncan sleeps, she will give his chamberlains wine to make them drunk, and then she and Macbeth can slip in and murder Duncan. They will smear the blood of Duncan on the sleeping chamberlains to cast the guilt upon them.
I believe the answer is : D ) 300 years.