Answer :
The answer is none of these. All choices should be considered to be careful and prepared for driving. Poor visibility, poor road conditions, and an inclement weather are not a good condition. If ever a driver would face this kind of situation and there is a choice of not driving, it is better not to drive.
Answer: Each of the given reason (poor visibility, poor road conditions, inclement weather) is a reason to give yourself extra "cushion" when driving.