An engineer is designing an implant to help people with spinal issues. The engineer is performing a cost-benefit analysis of his implant. Which of these would be a cost? Choose the correct answer. Group of answer choices

The implant has a long lifespan in the human body.

The implant is effective in treating a spinal issue.

The implant is made from a rare metal that is difficult to mine.

The implant is very small and can be implanted easily by a surgeon.

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