According to the models developed by NOAA, by the end of the 21st century, global sea level may rise as high as

The correct answer is - 0.2 to 2 meters.

There has been a lot of concern about the sea level rising, and considering that big proportion of the world's population lives in the coastal areas that are vulnerable to the sea level rise, there's every reason for concerns. According to the projections that NOAA has been making for the future rise of the sea level, there's multiple suggestions, and the variation in increase of the sea level can be anywhere from 0.2 meters to 2 meters by the end of the year 2100.