The immune system has both specific and nonspecific immune responses against pathogens. Which scenario describes a specific immune response ?

A the body using intact skin to keep out all pathogens

B antibodies being produced to fight off a pathogen inside the body

C macrophages engulfing an unknown virus that has entered the body

D Inflammation and redness occurring at the site of a bacterial infection

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the correct answer is b