Answer:
The correct answer is option a.
Explanation:
A budget line represents the maximum possible combination of two goods that can be purchased by an individual by spending all of his income. Â
George has a weekly income of $50.
He spends this income on donuts and coffee.
The price of a donut is $1 and the price of coffee is $2.50.
As George's income increase to $100, George will be able to afford more coffee and donuts as the price of coffee does not change. Â
So, the budget line will shift to the right, indicating the increase in the quantity of goods George can afford.