Answer:
Among the options provided, "Antibodies" are NOT a nonspecific defense mechanism.
Step-by-step explanation:
Antibodies are a specific immune defense mechanism produced by the adaptive immune system in response to specific pathogens or antigens. They are highly specific and are not considered part of the nonspecific or innate defense mechanisms like inflammation, barriers to entry, and phagocytosis. Nonspecific defenses are the body's general mechanisms for defending against a wide range of potential threats, while antibodies target specific pathogens.