Fill in the blank with correct option
The thick smoke _________ out of the landfill site is making the city’s polluted air even more toxic.

Options

A. a) burning
B. b) tossing
C. c) billowing
D. d) rocking

Explanation

(c)billowing-filled with air and welling outwards.
(a) burning-on fire-
(b)tossing-throw (something) somewhere lightly or casually. (d) rocking-the action of moving or being moved gently to and fro or from side to side.