I think it would be conditioned stimulus but I'm probably wrong.
Answer:
signing the Emancipation Proclamation.
The correct answer is C. The higher the real income, the more cash the family will hold.
Explanation
The income of a family is the amount of money that the family earns, who are usually the parents. The income allows parents to acquire goods such as a house, cars, motorcycles, food, home appliances, among others. Therefore, the more income a family has, the greater will be its ability to purchase goods and services. Therefore, the correct answer is C. The higher the real income, the more cash the family will hold.
