The future perfect
a. will happen
b. already happened
c. should happen
d. is happening
i see where some are saying a. will happen is wrong has anyone had this question?

is basically a good source of getting and others by what you know for example if someone asked a question and you know the answer you could answer it and get some points or if you need on a question you could make a post about it and wait till someone answers it or just look up the question and see if someone else has asked about it

Well first of all i think you need to add an excerpt from the story or passage. i think it might be d though.

Fine it out your self

The answer is symbolism .