X Remaining Time: 53 minutes, 35 seconds. Question Completion Status: O b and c 18 QUESTION 16 0.35 points Save Answer The beauty of an economic model comes from its ability to represent a complex reality without any simplification O its ability to make clear predictions that are consistent with reality its simplicity in presenting the essential elements of an otherwise complex reality O b and c QUESTION 17 0.35 points Save Answer According to a CNBC article, in January 2017, Walmart started offering free, two-day shipping for orders totaling more than $35, dropping its minimum purchase threshold, which had been $50 up until then. This is an example of O scarcity O marginal reasoning economic model O a hypothesis Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit (? Pri