Question

Joel Silver, who organized the first team-Frisbee match, is a Hollywood film producer.

Underlined: who organized the first team-Frisbee match
Which type of clause is the underlined phrase?

independent clause
noun clause
adverb clause
adjective clause

Answer 1

Adverb clause is the correct answer.

Answer 2

assuming that the sentence that is underlined is "who organized the first team-frisbee match"
the type of clause that it describe is : D. Adjective clause
This clause modifies the subject "joe silver"

hope this helps