Read the following excerpt from Passage 1.
"Smoke, thick and black, covers the town," he wrote. "Some 300,000 human creatures move ceaselessly through that stunted day. A thousand noises rise endlessly from out of this dark, dan! maze."
Which answer BEST describes what the word 'ceaselessly' means based on this excerpt?
a. Overcrowded
b. Campaigned C.
Joyously
d. Continuously