Q: Fact 1: Fog is formed by water vapor condensing in the air. Fact 2: The hotter the water, the denser the fog will be. Given the two facts above, when does haze get denser?

Select from the following.
(1). daylight changes;
(2). cloudy and rainy weather;
(3). reflect objectstowards the eye;
(4). colder weather;
(5). colder and wetter;
(6). at or near the margins;
(7). When the water is hot;
(8). flow of electrons;
A:
(7).