A heavy rain has left a layer of water on the road's surface; what should you do? When are roads the most slippery?
a) Slow down and drive cautiously; roads are most slippery during the first few minutes of rain
b) Speed up to avoid hydroplaning; roads are most slippery after heavy rainfall
c) Ignore the water; roads are never slippery
d) Use cruise control; roads are most slippery during light drizzle