Answer: meters per second
Explanation:
Speed is simply referred to as the distance that is traveled by someone or a particular thing per unit of time. Speed has to do with how fast a particular object can be.
Speed is considered to be a scalar quantity and its s.i unit is then meters per second.
I am pretty sure that it would be d) their proximity to the Mediterranean Sea
The most notable difference is that Naturalism focussed on creating realistic interpretations of reality with subtle, soft rendering as impressionistic paintings focussed on capturing a slightly more abstract interpretation of reality based on 'feeling' and artistic portrayal, often featuring visible brush strokes which was a controversial technique at the time of the movement.