Question

Which one is more correct?

Answer 1

Answer:

2, This is literally the worst thing in the world.

• The term "That's" is to state a fact.
• These sentences are hyperboles, which means it's not meant to be taken seriously.
• So that is why "that's" is incorrect, and "this is" is correct.

I hope this helped at all.

Answer 2

Answer:

This is literally the worst thing in this world