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 is the meaning of "congested" in this passage? a. crowded c. diseased b. polluted d. dangerous
