Two vehicles arrive at an uncontrolled intersection from different streets at the same time. a The driver on the right must yield to the vehicle on the left. b The driver on the left must yield to the vehicle on the right. C Both vehicles must stop. d Neither vehicle must stop

The correct answer is b. The driver on the left must yield to the vehicle on the right.<br /><br />When two vehicles arrive at an uncontrolled intersection from different streets at the same time, the general rule is that the driver on the left must yield to the vehicle on the right. This is to ensure that the vehicle on the right has the right-of-way and can proceed through the intersection safely.<br /><br />Option a is incorrect because the driver on the right does not have to yield to the vehicle on the left. Option c is incorrect because both vehicles do not have to stop unless there is a traffic sign or signal indicating that they should do so. Option d is incorrect because the driver on the left must yield to the vehicle on the right.