The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
I think the best way to sum up the broadness and diversity of World Literature? is the following.
Through World Literature we can know the culture, traditions, customs, and history of the different ethnicities, countries, races, and communities of the world.
Let us use this metaphor. World Literature is our "passports" to other countries' ideals, essence, national values, and identities. It is the way to understand different perspectives of the world in order to construct commonalities that help people unite, instead of separating.