In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured in newtons per kilogram (N/kg).
I think the answer would be A. Density because many headlights could have the same density, but the rest of the analysis techniques would be specific to that crime.
