Question

Which is a class of extremophile?

Answer 1

The correct answer is option C, halophile

Reason -

Halophiles are organisms that live in extreme climatic conditions such as high level of salt concentration which is five times larger than the salt concentration of the ocean for example Dead sea, the great salt lake, evaporation water bodies etc.  

Halophile have enzyme which causes selective import of K+ ions that regulates the osmotic pressure by increasing the internal salinity.  

Answer 2

C. Halophile is the correct answer