It's A) Encourage lots of little behaviors to add up into one large action.
Hope this helps, Good luck! (:
Think about it. 65 mph means you go 65 miles in one hour, so in 2 hours you go 65×2 miles, in 3 hours you go 65×3 miles, and in 3.5 hours you go 65 × 3.5 miles.
Hope this helped
I think its a context clue for a producer or well an inorganic chemical reaction.
