Answer : The correct option is, (A) The given solution is basic in nature.
Explanation :
Indicators : It is a substance that gives the visible sign by the color change of the chemical species like an acid or a base.
Phenolphthalein, methyl orange, methyl red, etc are the type of acid-base indicators which changes the color based on pH values. They are used in the acid-base titration.
The given indicator is, Phenolphthalein.
The role of phenolphthalein indicator is that it imparts pink color to an alkaline or basic solution and it is colorless in acidic solution.
From the given problem, we conclude that the unknown solution (given solution) is, basic in nature that changes the color of a phenolphthalein indicator from colorless to pink.
Hence, the correct option is, (A) The given solution is basic in nature.
