If we form a five-letter meaningful word by using the 2nd, 5th, 6th, 7th and 11th letter from the left end of the word ‘ APPLICATION’ (Using each letter once) , then which of the following will be the fourth letter of the meaningful word thus formed. If more than one word is formed then mark Z as your answer. If no meaningful word is formed, mark X as your answer.

The given correct option is I.

Let's break down the step-by-step logic to solve this word-formation puzzle:

Step 1: Identify the positions of the letters in the given word
The given word is APPLICATION.
Let's list each letter along with its position from the left end:
1st letter: A
2nd letter: P
3rd letter: P
4th letter: L
5th letter: I
6th letter: C
7th letter: A
8th letter: T
9th letter: I
10th letter: O
11th letter: N

Step 2: Extract the specified letters
We need to pick the following positions:
- 2nd letter: P
- 5th letter: I
- 6th letter: C
- 7th letter: A
- 11th letter: N

The extracted letters are P, I, C, A, N.

Step 3: Form meaningful English word(s) using each letter exactly once
Using the letters P, I, C, A, N, we can form the English word:
PANIC

No other meaningful 5-letter English word can be formed using these exact five letters.

Step 4: Find the fourth letter of the word formed
In the word PANIC:
1st letter: P
2nd letter: A
3rd letter: N
4th letter: I
5th letter: C

Therefore, the fourth letter of the meaningful word formed is I.