Explanation:

Correct option:1

Solution: COMPUTER is written as CMOQVERT.

Here the logic is : First 3 letters and last 3 letters are arranged according to alphabetical order and the 2 letters in middle are increased by 1.

 LANGUAGE 

First 3 letters= LAN will be written as ALN     (arranged according to alphabetical order)
Middle 2 letters= GU will be written as HV     ( increased by 1.)
Last 3 letters= AGE will be written as AEG     (arranged according to alphabetical order)
Hence  LANGUAGE will be coded as ALNHVAEG