When a person exercises, the cells of the body need more oxygen. this is achieved by the system increasing the amount of oxygen that is supplied to the blood and the system increasing the rate of delivery of the blood to the cells of the body.

A. digestive; circulatory
B. circulatory; digestive
C. respiratory; cardiovascular
D. cardiovascular; respiratory

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c