In these circumstances, what lights should we use?

In these circumstances, what lights should we use?
A)It is not necessary to use any lights as it is daytime.
B)Position lights.
C)Dipped headlights.Correct
When driving on any type of road and in circumstances in which visibility is appreciably less than normal, such as fog, heavy rain, snowfall, smoke or dust clouds or any other similar circumstance, low-beam headlights must be used.
You cannot drive with only the position lights. We always need position lights plus some other light to accompany them.