The correct answer is coupons and comparative shopping.
Coupons are commodities that give consumers a saving on the purchase of an item(s) at particular stores. These coupons help individuals to save money. Comparative shopping works in a similar way. However, instead of having a physical coupon to show, consumers can compare prices of goods from different stores using resources like newspaper advertisements or online databases.
Opportunity costs and marginal benefits have nothing to do with saving money. Rather, these deal with other economic principles like choosing between different options and the additional satisfication that a person gets from consuming more of a good.
A person who engage in intra-individual communication is the one who talks to himself/herself. Talking to herself or himself is the person who is engage in intra-individual communication. When you are trying to practice speaking in public in the mirror, you are most likely engage in intra-individual communication because you are talking to yourself.
Answer:
They needed ways to move around the city
Explanation:
The article focuses on new technology reducing food prices and helping in urbanization.
