Please provide detailed explanations for 15,16,17

15. Blood flows through a section of a horizontal artery that is partially blocked by a deposit along the artery wall. A hemoglobin molecule moves from the narrow region into the wider region. What happens to the pressure acting on the molecule? Deposit Hemoglobin molecule A) The pressure increases. B) The pressure decreases. C) There is no change in the pressure. 16. A wave oscillates up and down four complete cycles each 1 s. If the wave travels an average distance of 16 m in 1 s, its wavelength is B) Im. C) 8 m. D) 4m. E) 64 m. 17. During a single period, the distance traveled by a wave is A) one-half wavelength. B) one wavelength. C) two wavelengths