Their unique physiological adaptations let the crab harvest large clusters of bacteria that grow on the surfaces of hydrothermal vent chimneys. They spend most of their lives in the water heated by the vents, and the crabs are unable to move between vents due to the stark difference in water temperature.
Answer C seems more accurate-than the others
Solar flares *were* the <span>cause of the difficulty, and new instruments *are* the solution.</span>
