Each vowel in the word 'MALNOURISHED' is changed to the following letter in the English alphabetical order and each consonant is changed to the preceding letter in the English alphabetical order. How many letters are there in the English alphabetical order between the letter which is the second from the left end and the third from the left end in the group of letters thus formed?

Given word: MALNOURISHED

According to the question,

So, new letter cluster formed: (Left end) L B K M P V Q J R G F C (Right end)

Second from the left in the new letter-cluster thus formed: (Left end) L B K M P V Q J R G F C (Right end) → B

Third from the left in the new letter-cluster thus formed: (Left end) L B K M P V Q J R G F C (Right end) → K

Thus, number of letters are there in the English alphabetical order between the letter which is the second from the left end (B) and the third from the left end (K) in the group of letters thus formed → C, D, E, F, G, H, I, J →  8

Hence, "Option 2" is the correct answer.