What can cause a faster-moving vehicle to suddenly swerve on a dry, straight road?

You answered correctly. Both gusts of wind and a tyre blow-out can cause a vehicle traveling quickly on a dry, straight road to swerve suddenly. Strong side winds can push a car sideways without warning, even on straight roads, especially at higher speeds. A tyre blow-out means one of the tires loses pressure abruptly, causing the car to pull sharply to one side and making it difficult to control. In contrast, a continuous head wind usually does not make a vehicle swerve but rather slows it down. Remember, always be alert for sudden changes in driving conditions, especially at higher speeds, and maintain a firm grip on the steering wheel.