Step 1: Understanding the budget line.
A budget line shows the combinations of two goods that a consumer can afford given their income and the prices of those goods.
Step 2: Effects of income on the budget line.
When income increases, the consumer can afford more of both goods. This causes the budget line to shift outward, towards the right.
Step 3: Comparison with other options.
- (A) Left: Incorrect. A budget line shifts left when income decreases.
- (B) Right: Correct. An increase in income causes the budget line to shift right, reflecting the consumer's increased purchasing power.
- (C) Downwards: Incorrect. Income changes do not cause the budget line to shift downward.
- (D) None of these: Incorrect. Option (B) is the correct answer.
Step 4: Conclusion.
Therefore, when income increases, the budget line shifts towards the right.
Final Answer: Right.