If in a code language ‘GRAPES’ is written as ‘NKLEOI’, the n how will ‘APPLES’ be
written in the same code language ?

Correct option is D

Given: GRAPES is coded directly as NKLEOI. We must find the code for APPLES.
Solution:

Comparing code with options,

Option a)

LETHIO= LE??OI

Last letter is not similar.

Option b)

EOLHTI= LE??OI

None of the letter is similar.

Option c)

EHLTOI= LE??OI

First two letters are not similar.

Option d)

LEHTOI= LE??OI

Except for two letters which are missing all are similar. 

Final Answer: LEHTOI

So the correct answer is (d)