Final answer:
The question asks about the required number of people needed in a High-Occupancy Vehicle (HOV) to use designated HOV lanes. The requirements vary by region, typically ranging from 'Two or More' to 'Five or More' people per vehicle.
Step-by-step explanation:
The question 'Only buses and HOVs in this lane - may show how many people might be in the HOV' pertains to the occupancy requirements for High-Occupancy Vehicle (HOV) lanes, which are a type of managed lane dedicated to vehicles with a higher number of passengers to promote carpooling and reduce traffic congestion. The possible number of people required in an HOV for it to qualify for HOV lane usage varies by region and the specific rules of the roadway. In some areas, the requirement might be Two or More people (option A), whereas in other more congested areas, the mandate might rise to Three or More (option B), Four or More (option C), or even Five or More (option D) individuals per vehicle. The information provided in the context doesn't specify a particular region, so without additional details, it's impossible to determine the correct answer. Typically, the most common HOV requirements are for two or three occupants per vehicle.