Which of the Following Best Matches the Description

Which of the following best matches the description?
-Small pieces of solid material or droplets of liquid that are dispersed into the atmosphere.

A) thermal inversion
B) acid deposition
C) secondary air pollutants
D) ozone
E) particulates
F) radon
G) greenhouse effect
H) primary air pollutants
I) radon.
J) photochemical smog
K) oxides of nitrogen
L) sulfur dioxide