Plants have many different hormones that influence their growth, development, and life cycle. For example, a cluster of over-ripe bananas on the counter can cause a newer apple to begin to ripen more quickly and go bad. Which hormone below is found in many fruits and can become airborne and cause over-ripening and abscission?

A. Abscisic acid
B. Auxin
C. Cytokin
D. Ethylene