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.
This is an example of psychological conditioning. When a stimulus (a flash of light) is paired with a consequence (an electric shock), the subject has a particular behaviour (pulling the finger away). After enough repetition, the subject will learn to associate the two, and the stimulus will be enough to motivate the behaviour, even when no consequence is present.
After several trials without the consequence, the subject will again dissociate the stimulus from the behaviour, and will go back to his pre-study pattern, in a process called extinction.
The answer is C) Difficult.
There's no options, so I'm not sure if this is correct but- I'd say the word that fills the blank, would be "social"
~Good luck!
