In the Lucas test, turbidity  given by

Given data:
It is given to identify the alcohol in the Lucas test.
Explanation:

A carbocation intermediate is going to be formed when an alcohol and Lucas reagent interacts. The rate of the reaction is thus determined by the carbocation's stability. Because of this, the order of reactivity for alcohols with the Lucas reagent is $3°>2°>1°$. 

2-Methyl-2-butanol will produce a $3°$ carbocation, which is the most stable, and will therefore give quick turbidity when reacted with the Lucas reagent. 

Hence, the correct option is option (C) $3°$Alcohol.