Final answer:
The vehicle on the left has the right of way at an intersection according to the general rule of yielding to the vehicle on the right.
Step-by-step explanation:
In this question about the right of way at an intersection, the subject is related to the rules and laws regarding traffic and road safety. This falls under the subject of Social Studies, which focuses on understanding different aspects of society and how individuals interact with one another.
The correct answer to the question is option a. The vehicle on the left has the right of way. This is based on the general rule that when two vehicles arrive at an intersection at the same time, the vehicle on the left should yield to the vehicle on the right. It is important to follow traffic rules to ensure safe and orderly flow of traffic.