what is a base used in deodorants?\no sorbitol\no carrageenan\no magnesium hydroxide\no sodium lauryl sulfate

Answer:

C. magnesium hydroxide

Explanation:

Step1: Analyze sorbitol

Sorbitol is a sugar - alcohol, not a base.

Step2: Analyze carrageenan

Carrageenan is a polysaccharide, not a base.

Step3: Analyze magnesium hydroxide

Magnesium hydroxide ($Mg(OH)_2$) is a base. It can neutralize acids and is sometimes used in deodorants for its antacid and deodorizing properties.

Step4: Analyze sodium lauryl sulfate

Sodium lauryl sulfate is a surfactant, not a base.