When driving in snow:

• Keep your windshield wipers and defroster in good condition.
• Keep your gas tank at least half full to prevent the gas line from freezing.
• Keep your windshield washer filled with cleaning fluid that won't freeze.
• All of the above.
  Explanation:

  "When driving in snow: 1. Keep your windshield wipers and defroster in good condition. 2. Keep your gas tank at least half full to prevent the gas line from freezing. 3. Keep your windshield washer filled with cleaning fluid that won't freeze."