PLEASE HELP FAST FOR TEST NOW

Explanation:

B cells produce and secrete antibodies, activating the immune system to destroy the pathogens. The main difference between T cells and B cells is that T cells can only recognize viral antigens outside the infected cells whereas B cells can recognize the surface antigens of bacteria and viruses

there are men and women, some choose to be both or change their gender. often times those people go by "other". those who change their gender are known as "transgender"