The following options helps keep people from slipping on floors
A) Have the proper absorbents in an easy-to-find place to quickly put on spills : So that accidental little spills can be cleaned right away.
C) Wear slip-resistant footwear : It is a precautionary step to follow, no matter where we go.
D) Mark a slippery area with an easy-to-use tent sign that says " Caution, Slippery floor" : This allows people to be aware of the wet area and cross it cautiously.
Leaving oil and fluids to air dry thoroughly, takes a long time and there are chances that people step over it and slip.
So, the answer is
(B) Anytime oil or fluids are spilled on the floor, leave them to thoroughly air dry.