Explanation:

- Initially, let's assume Sushma was spending 100 units on the edible oil.

- The price of the oil increases by 25%, so the new price is 125 units.

- To maintain her budget, Sushma reduces her consumption by 20%.

- Reducing consumption by 20% means she consumes 80% of her initial quantity.

- Her new expenditure becomes 125 units (new price) × 0.8 (80% of the original quantity) = 100 units.

- As a result, Sushma’s expenditure remains the same.

Thus:

- Correct Answer: Option 1 - 0