The answer is: C- Shakespeare explored the theme of love and death in his sonnets; however, he argued that love transcends death.
A comma splice is a common grammatical error in which two independent clauses are joined by a comma. The best ways to fix this error is to add a conjunction, like in this case, the conjunction “however” was added. One could also fix this problem by making each independent clause a single sentence or by adding a semicolon, which in this example, given the options provided, was also added in order to maintain the original idea as intact as possible.