Sarah wants to know which brand of nail polish lasts the longest without chipping. she buys 4 types of nail polish – essie (which she normally uses,) butter, opi, and sally hansen. every sunday for 4 weeks she paints her nails with a different brand of polish and records how many days she lasts before she gets her first chip. she makes sure to use the same bottom coat and top coat with each type of polish, and she makes sure to do the same weekly routine each week so that her nails aren't getting treated more roughly different weeks.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen