Is this correct:
"the factors that contributed to the movie's comedy"
im terrible when it comes to grammar.
"the factors that contributed to the movie's comedy"
This is not a complete sentence. As phrases that could be included in a complete sentence, it's OK.
??
Here are some ideas to make it a complete sentence if you need to do that:
These are the factors that contributed to the movie's comedy: _and then go on to list them)_.
Many factors that contributed to the movie's comedy are _and then go on to list them)_.
Many factors contribute to the movie's comedy, such as _and then go on to list them)_.
Many factors contribute to the movie's comedy. (not the greatest, but grammatically correct)
=)