The graph shows the change in the duration of the sea-ice melt season in the Arctic from 1980 to 2015. The blue band represents the timebetween when ice began to melt and when it froze each year. Which conclusion can you draw from the graph?

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar