Question

which is a dependent clause?
o during intermission, while we were discussing the performance
o dodging frantically, a valet ran through the crowd and into the theater
o dashing after him, two police officers plowed through the lobby crowd
o discussing the commotion, we decided it was more exciting than the play

Explanation:

A dependent clause cannot stand alone as a complete sentence and often starts with a subordinating conjunction. "while we were discussing the performance" starts with the subordinating conjunction "while" and cannot stand alone. The other options are either phrases or independent - clause related structures.

Answer:

during intermission, while we were discussing the performance