What is a cream primarily composed of?

A cream is primarily composed of active medication, oil, and water, which makes option B the correct choice.

Creams are emulsions, typically consisting of a mixture of water and oil, which allows for a smooth application to the skin while effectively delivering the active medication contained within the formulation. The oil component provides moisturizing properties, while the water helps to hydrate the skin and enhance the absorption of the medication.

The inclusion of active medication is essential, as it serves the therapeutic purpose of the cream, whether it is for treating a specific skin condition, delivering pain relief, or addressing other health concerns. The balanced combination of these components in creams ensures that they not only deliver medication effectively but also improve the skin's condition and comfort upon application.

The other options do not accurately reflect the typical composition of a cream. Some may exclude key elements (like oil or active medication), which are critical to its formulation and function.