Direct speech: the reporting of speech by repeating the actual words of a speaker for example "I'm going" she said.
Indirect speech: indirect speech is a means of expressing the content of statements without quoting them explicitly as is done in direct speech.
The correct answer is:
What would happen if love didn’t die?
An independent clause is a clause that can stand alone as a sentence. When you read the sentence "what would happen if love didn’t die? you could use it as a sentence by itself, doesn't need any complement to make sense. On the other hand, the sentence "If the poem is about going mad when love is lost," is the dependent clause, because it needs a complementary sentence to complete the idea.
They allow readers to multitask