Select the most appropriate word for the given group of words A word formed from the initial letters...........

Explanation:

A word formed from the initial letters of other words and pronounced as a word

to find the correct substitution for the given group of words we must see the meaning os the given options.

1. ellipsis - the omission from speech or writing of a word or words that are superfluous or able to be understood from contextual clues.

2. acronym - an abbreviation formed from the initial letters of other words and pronounced as a word

3. epitome - a summary of a written work; an abstract.

4. precise - marked by exactness and accuracy of expression or detail.

Hence after looking at the meaning it is clear that the correct substitution for the given group of words is 'acronym'.

So option 2 is the correct answer.