Which base is used in the manufacture of soap?

Soap is one among the various things it is used to make. Extremely corrosive (harsh). It is either employed as a solid or a 50% solution. It is odourless and colourless (smell). It is an extremely potent compound that soaks up moisture before dissolving.

This substance is sometimes referred to as lye or caustic soda. The process of making soap is referred to as saponification. When soap is dissolved in water, it may clean surfaces like the human body of grime. a quick way to clean any solid surface. It is made up of either plant or animal oil and sodium salts (caustic soda).
For manufacturing soap, the two main ingredients are alkali and fat.

Sodium Hydroxide is the alkali most frequently employed (NaOH). Use of perfume and scents can mask the smell of filth.
Fragments of NaOH are combined with a liquid to form a solution, and when this solution is combined with fats and oils, a chemical process known as saponification takes place.
Therefore, B, or NaOH, is the right answer.
In order to make soap, NaOH is employed as a base.

Hence, option B is correct.