The engine coolant temperature gauge should be checked:

Frequently during the trip.. Section 2.1: You should check your gauges (including water temperature) regularly while driving.

The engine coolant temperature gauge should be checked:

ANSWER BREAKDOWN
  • A. Incorrect. "Before the trip only." is not correct. You should check your gauges (including water temperature) regularly while driving.
  • B. Incorrect. "After the trip only." is not correct. You should check your gauges (including water temperature) regularly while driving.
  • C. Correct. You should check your gauges (including water temperature) regularly while driving.
  • D. Incorrect. "Only if the alarm sounds." is not correct. You should check your gauges (including water temperature) regularly while driving.