This question is based on the given words. GUT NET MOB MAN How many letters…

For questions that ask how many letters lie between two reference letters of the English alphabet, assign each letter a running position number from A = 1 to Z = 26. The count of letters that lie strictly between two reference letters equals the absolute difference of their position numbers, minus 1 (the two reference letters themselves are not counted).

1. The four words are given left to right as: GUT, NET, MOB, MAN.

2. The “first word from the left” is the word that appears first when the list is read left to right, which is GUT.

3. The “first word from the right” is the word that appears first when the same list is read from the right-hand end, which is MAN (the last word in the left-to-right order).

4. The second letter of GUT (G-U-T) is U, whose position in the alphabet is 21.

5. The second letter of MAN (M-A-N) is A, whose position in the alphabet is 1.

6. Applying the rule from above: the number of letters strictly between position 21 (U) and position 1 (A) is |21 − 1| − 1 = 19.

Cross-check by listing the letters that come after A and before U: B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T — counting these gives exactly 19 letters, which matches the formula result.

So, 19 letters lie in alphabetical order between the second letter of the first word from the right (A) and the second letter of the first word from the left (U); the correct option is 19.