If it is possible to make only one meaningful 4-letter English word with the 1st, 5th, 6th and 9th letters of the word 'COMPARTMENT', which of the following will be the third letter from the left end of that word? If no such word can be made, give 'O' as the answer and if more than one such word can be made, give 'L' as the answer.

How many meaningful English words can be formed using the first, fourth, fifth, and eighth letters from the left end of the word 'CONVERSATION', using each letter only once in each word? If no meaningful word can be formed, mark the answer as Y, and if more than three words can be formed, mark the answer as Z. Otherwise, choose the correct answer from the options given below.

If it is possible to make a meaningful 3-letter word with the 3rd, 4th, and 11th letters of the word 'CONTROVERSIAL', what is the middle letter of that word?