Malfunction of colostomy:

An allergen is best described as a:

A) substance in the body that recognizes foreign materials. B) chemical released by cells in the body to fight foreign materials. C) chemical messenger in the body that activates the immune system when there is a foreign material present. D) foreign substance that causes a hypersensitivity reaction in the body.

Based on a 2015 survey, 32% of U.S. adults cannot read

Indicate whether the statement is true or false.