The correct answer is: A. road side interview method
The roadside interview method is the preferred method for collecting origin and destination data for a small area like a mass business center or a large intersection. This is because it is a relatively inexpensive and efficient way to collect data from a large number of people. The roadside interview method involves stopping people at random as they enter or leave the area of interest and asking them about their travel habits. This data can then be used to create origin and destination matrices, which are used to model traffic flows.
The other options are not as effective for collecting origin and destination data for a small area. The license plate method involves collecting data on the license plates of vehicles entering and leaving the area of interest. This data can then be used to track the movements of vehicles, but it does not provide information on the origin and destination of
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