A grocery store started giving customers complimentary coffee and donuts on certain mornings. The store found that, on average, people spent more money on the days when they were given free coffee and donuts than on other days of the week. Which principle of social compliance best explains this? Automaticity Commitment and consistency Reciprocity Scarcity Authority A grocery store started giving customers complimentary coffee and donuts on certain mornings. The store found that, on average, people spent more money on the days when they were given free coffee and donuts than on other days of the week. Which principle of social compliance best explains this? Automaticity Commitment and consistency Reciprocity Scarcity Authority