If your tank vehicle has vents, why is it important to keep them clear?

So they work correctly to prevent tank damage. Section 8.1.1: Keep the vents clear so they work correctly.

If your tank vehicle has vents, why is it important to keep them clear?

ANSWER BREAKDOWN
  • A. Incorrect. "To improve aerodynamics" is not correct. Keep the vents clear so they work correctly.
  • B. Incorrect. "To allow the driver to see inside" is not correct. Keep the vents clear so they work correctly.
  • C. Correct. Keep the vents clear so they work correctly.
  • D. Incorrect. "To let rain water drain out" is not correct. Keep the vents clear so they work correctly.