The answer is "A"
Chlamidya is a STD and bacterial infection that will usually be involved with all the symptoms that you have listed.
Antibodies, antigens are the bad things antibodies fight :)
The reason why ethics differs when we're talking about people, companies, nations is that all of these have interests which may differ. What happens then with differing interests is that it also lead to different moral and value systems which again in turn lead to different ethics. Most usually, the actual source why ethics differ is either due to the interests or wishes of a particular social group mentioned here.
Answer:
The influence of culture on health is vast. It affects perceptions of health, illness, and death, beliefs about causes of disease, approaches to health promotion, how illness and pain are experienced and expressed, where patients seek help, and the types of treatment patients prefer.