Answer:
C
Explanation:
because its so obvious that A and B is not correct and doesn't match the statement
Tiny solid and liquid particles suspended in the atmosphere are collectively called aerosols
Pressure, surroundings, magnitude <span />
Northeastern United States is the region next to the Great Lakes (for example: lake Ontario) - and in fact they form the border between the Northeastern United States and Canada. (Perhaps" Great Lake region" fits better the gap - the gap needs a phrase in singular form).