The correct option is
A Salt loving
Halophilic microorganisms are called as halobacterium. They are called as salt-loving as they grow in the salt-rich medium. Such microorganisms cannot survive in low salt media. They have two ways to balance their osmolarity. The first is the accumulation of NaCl KCl. The second strategy is to exclude salt from the cytoplasm and to synthesize and accumulate organic 'compatible' solutes that do not interfere with enzymatic activity. Thus, the correct answer is option A.