What are two ways in which white blood cells fight pathogens that have entered the body? O A. They produce hormones to locate the pathogens. OB. They surround and destroy the pathogens. I C. They make digestive acids to destroy the pathogens. D. They produce antibodies that work against the pathogens.

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3