All of the above is the answer
It's the first one, a vanishing road to show perspective because you can see the lines of the fence seem to go one forever into the distance.
The fill light shines from the side and eliminates shadows.
The stronger contrast in value between an object and the background, the more visual weight the object has. the stronger the contrast in value between an object and the background, the more visual weight the object has. dark values appear heavier than light values.