If a meaningful word is formed using the first, fourth, seventh, and eighth letters (from the left end) of the word “HOUSEWIFE”, which of the following will be the third letter from the left end of the meaningful word formed? If more than one such word can be formed, mark Z as your answer. If no meaningful word is formed, mark X as your answer.

To find the correct answer, let us analyze the given word step-by-step.

The given word is "HOUSEWIFE".
Let us write down the positions of the letters from the left end:
1st letter: H
2nd letter: O
3rd letter: U
4th letter: S
5th letter: E
6th letter: W
7th letter: I
8th letter: F
9th letter: E

According to the question, we need to extract the first, fourth, seventh, and eighth letters from the left end:
- 1st letter = H
- 4th letter = S
- 7th letter = I
- 8th letter = F

The set of extracted letters is {H, S, I, F}.

Now, let us determine the meaningful English words that can be formed using all four of these letters exactly once:
- By rearranging H, S, I, and F, we can form the word "FISH".
Let us check if any other meaningful English word can be formed from these letters. There are no other valid English dictionary words that can be formed using H, S, I, and F.

Since only one meaningful word, "FISH", can be formed, we find the third letter of this word from the left end:
1st letter: F
2nd letter: I
3rd letter: S
4th letter: H

Therefore, the third letter from the left end of the formed word is S.

The correct option is S.