Which of the four methods of data collection is involved when a person counts the number of cars passing designated locations on the los angeles freeway system?

Counting the number of cars passing through designated locations on the Los Angeles freeway system is a method of observation of data collection, because a person uses all of their sense to examine in natural setting or naturally occurring situations. Observation of a field setting includes extended commitment in a setting or social situation, communicating attention in ways that is in some sense standardized and recording one’s observation.