Nikorn Phasuk, a Bangkok policeman who is also known as Plastic Man, steps onto a stage of asphalt under the glare of a blazing sun. He crouches, then retreats with mincing footwork as he coaxes vehicles toward him with fluid arm gestures, part of an artful ballet he uses to keep traffic rolling, no small feat in the city that may have the most congested streets in the world.
—Neal Grove, “The Many Faces of Thailand,” National Geographic, February 1996

What point does the author make by describing Nikorn Phasuk’s job?
a. Traffic control is the most important job in Thailand.
b. Traffic is a serious problem in Thailand and requires expert handling.
c. Traffic is the source of most of the air pollution in Thailand.
d. Traffic in Thailand will improve in the future because of the efforts of people like Nikorn Phasuk.

Please select the best answer from the choices provided

A
B
C
D