Can you please include a photo of the passage?
B. It depend on the poet or poem . But the answer is between B or C
The correct answer is that it is a dependent clause.
A dependent clause, as the name itself says, depends on a larger clause in order to make sense. As you can see in the example above, that clause is incomplete - it needs to be part of a larger, independent clause in order to get a proper meaning. The other options are all complete sentences, which is something the example is definitely not.
Henry declared the english monarch head of the church, Mary restored Catholicism and Edward made England purely protestant.