What must you be prepared to do at sign T8?

The correct response is that you must be prepared to stop and turn left or right at sign T8. This sign indicates that you are approaching an intersection where a choice is required regarding your direction of travel. Drivers are expected to be aware of the sign's instructions and ready to make a decision on how to proceed safely, either by halting at the intersection and turning or continuing straightforward if permitted.

Understanding the context behind this sign is important for safe driving. It emphasizes cautious behavior in intersections, which are common points for accidents. The requirement to stop shows that you need to assess the situation before proceeding, ensuring that it is safe to turn. This prepares drivers to be vigilant about other vehicles and pedestrians that may be present.

The other options involve actions that are not appropriate for this sign's requirements, such as accelerating through intersections or making U-turns without a clear understanding of oncoming traffic, which could lead to dangerous situations on the road. Thus, focusing on the necessity to stop and turn reflects adherence to traffic rules and promotes safety for all road users.