_____ is an organized whole that is perceived as different from just the sum of its parts.

What’s the function of your pinna?

a. to enhance the ability of your taste buds

b. to guide sound in the environment toward your inner ear

c. to enlarge or shrink the opening in your iris to adjust the amount of light your eye takes in

d. to form tiny scent-seeking threads that extend from olfactory receptors through the mucus of your nose