Please please help. I do not understand these whatsoever. I am giving fifty points for someone to answer.

What is the type of subordinate clause found in the following sentence?

I heard that trucks can no longer travel on Grove Street.
A. Adverbial
B. Adjectival
C. Noun

What is the type of subordinate clause found in the following sentence?

Wrap that meat in foil before you put it in the freezer.
A. Adverbial
B. Adjectival
C. Noun

What is the type of subordinate clause found in the following sentence?

Since I will have a test in Spanish, I went to the language lab.
A. Adverbial
B. Adjectival
C. Noun