What is crucial to check before starting a left turn?

Answer: C — Look both ways before making the turn

Looking both ways before making a left turn is essential for ensuring safety on the road. This action allows drivers to assess the traffic conditions in both directions, checking for oncoming vehicles or pedestrians that may not be immediately visible. By doing this, a driver can make an informed decision about whether it is safe to proceed with the turn, minimizing the risk of collisions. While it is important to ensure that passengers are seated and to check for nearby vehicles, these actions do not directly address the immediate hazards present during a left turn. Looking both ways is a proactive measure that enhances situational awareness and reinforces the importance of being vigilant for any potential dangers before executing the maneuver.