Which sentence below contains a dependent clause?

A. I know you’re busy tonight and you can’t join us.**
B. The moon is supposed to be especially bright in the sky tonight.
C. We should practice the song again.
D. I’ve watched so many movies that take place in London.

No. Both clauses are independent.

The sentence that contains a dependent clause is A. "I know you're busy tonight and you can't join us." A dependent clause is a group of words that contains a subject and a verb but cannot stand alone as a complete sentence. In this sentence, the dependent clause is "you're busy tonight and you can't join us." It depends on the main clause "I know" to make sense and cannot be a complete sentence on its own.