Essay means to write a story
Rainfall and precipitation levels are decreasing as a result of climate change. The sea level rise is another climate impact which will affect Kuwait, as mean sea levels are expected to increase by 0.16–0.63 m by 2050, which will cause coastal erosion and destruction of ecosystems and low-lying urban infrastructure.
The correct answer to this problem would be the word theirs, the first one.
The usage of their/s is kind of a tricky one since it depends on what it usually is pertaining to in the previous lines. In this problem, it would refer to our presentation. If another word, let's say presentation, is added after the blank, then the answer would be their. In this case, there isn't anything after it so the answer would be theirs.
Those that have apostrophes on them aren't an option since it isn't applicable in this situation.