Which statement is true about an adsorption desiccant?

An adsorption desiccant is a substance that can attract and hold moisture from the air, which makes it effective in reducing humidity in various applications. The correct choice indicates that it can absorb moisture, which captures the fundamental function of an adsorption desiccant. Additionally, many adsorption desiccants are physically reusable after being heated, as the heat removes the moisture they have collected, allowing them to be used repeatedly. This characteristic enhances their utility in situations where humidity control is needed over an extended period.

Furthermore, adsorption desiccants generally retain effectiveness at different temperature ranges, although their efficiency may vary. The ability to function across a variety of temperatures is a notable feature that adds to their versatility in practical applications.

Given these points, the option stating that all the choices apply accurately encompasses the key features of adsorption desiccants, confirming the truth of each individual statement.