Find which one word cannot be made from the letters of the given word.
$COMMENTATOR$

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$T, E, L, S, C, A$
$1, 2, 3, 4, 5, 6$

If it is possible to make a meaningful word with the second,the fifth,the tenth,and the twelfth letters of the word $METROPOLITAN$,which of the following will be the third letter of that word? If no such word can be made,give $X$ as the answer,and if more than one such word can be made,give $M$ as the answer.

Find which one word cannot be made from the letters of the given word: $DISAPPOINTMENT$.

If the first three letters of the word $COMPREHENSION$ are reversed,then the last three letters are added and then the remaining letters are reversed and added,then which letter will be exactly in the middle?

Arrange the given words in alphabetical order and choose the one that comes first.