When the price of a good changes, what effects tend to create the law of demand?

theres no answer choices bu there are 3effects that explain the law of demand.

Income effect - As the price of a good increases, people purchase less quantity because they are limited by the amount of income they earn. Since it's not allowed to change, they are forced to purchase less.

Substitution effect - As the price of a good increases people purchase less quantity because they will switch to a now "relatively" cheaper substitute. The price of the substitute isn't allowed to change, so people buy more of it and less of the original.

Law of D.M.R. - As you acquire more of a good, the value of each unit decreases. Because the value is decreasing, so is the amount you are willing to pay leading to an inverse relationship between price and quantity demanded.

sorry its a long answer i dont mean to be that one person

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b