Answer:
C
Step-by-step explanation:
The correct answer is C) Lymphocytes recognize pathogens as antigens in the body.
The first response of the human immune system to a pathogen is to recognize it as foreign and to identify it as a potential threat. This recognition occurs through the activation of specialized white blood cells called lymphocytes, which can recognize and respond to specific antigens on the surface of the pathogen.
Once the pathogen has been identified, the immune system can mount a more targeted response, such as the release of antibodies by B cells, the activation of T cells to destroy infected cells, or the recruitment of other immune cells to the site of infection.
Antibiotics are medications that can be used to treat bacterial infections but have no effect on viruses or other pathogens. Vaccines are a preventive measure that can stimulate the immune system to build immunity to specific pathogens, but they do not directly destroy incoming pathogens.
In summary, the first response of the human immune system to a pathogen is the recognition of the pathogen as foreign, which triggers a more targeted and specific immune response to eliminate the pathogen and prevent infection.