Which of the following alcohols is the strongest acid?

Given data:
It is given to identify the alcohol that is the strongest acid.
Explanation:

The acidity serves as a gauge for proton donating power. While the acidity of the molecule increases when electrons are donated, it decreases when they are released.

The correct order of increasing acidity is ${\left(C{H}_3\right)}_{3}COH$ followed by ${\left(C{H}_3\right)}_{2}CHOH$ and then $C{H}_{3}OH$.
A strong acid requires a very stable conjugate base anion. Only then will acid dissociate more quickly to produce a hydronium ion.
The conjugate base in the illustration has three +I groups and a negatively charged O atom linked to it. It is thus the least stable. 

Again,  lacks +I groups, making it the most stable and acidic compound. 

Hence, the correct option is option (A) $C{H}_{3}OH$.