Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. Which of the following statements best describes a related function they serve in plants
a. Carotenoids help protect plants from excessive light and radiation damage.
b. Carotenoids aid in the attraction of pollinators to the plant.
c. Carotenoids help regulate the plant's temperature and water balance.
d. Carotenoids contribute to the coloration of fruits and flowers in plants.