Aggregate supply (as) denotes, while holding the price of inputs fixed, the <u>price level of output</u> that firms choose to produce and <u>GDP.</u>
<h3>What is aggregate supply?</h3>
Aggregate supply is when goods and service produced or manufacture are made available to buyers or can be defined as the amount of goods produce and supply to the market at particular period of time.
Aggregate supply can tend to increase in a situation were the price of goods and services decrease or when the price of product fall.
Therefore, Aggregate supply donate, while holding the price of inputs fixed, the price level of output that firms choose to produce and Gross domestic product (GDP).
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Answer:
d. Selling Price
Explanation:
Break even point is calculated as 
Thus, break even point in units only in two cases,
- Fixed cost is reduced that is decreased,
- Contribution per unit is increased.
Now, here the options are
a. Increase in units sales volume is of no relevance as will not impact the fixed cost or contribution per unit.
b. Increase in fixed cost will result in higher break even point, as numerator in the fraction will increase.
c. Increase in unit variable cost will ultimately decrease the contribution thus, it is of no relevance.
d. Increase in selling price will increase the contribution per unit, that is the increase in denominator value in fraction, thus, break even units will decrease.
Correct option is
d. Selling Price
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