Explanation:

- Option 1: Gresham’s Law

- Answer: Gresham's Law is the principle that "bad money drives out good money." When two forms of money are in circulation, the one with the lower value will be used more frequently, and the one with higher value will be hoarded.

- Option 2: Campbell’s Law

- This law states that the more a social indicator is used for decision-making, the more it is susceptible to corruption pressures, and the more it may distort the processes it is intended to monitor.

- Option 3: Engel’s Law

- This economic theory suggests that as income rises, the proportion of income spent on food falls, even if food expenditure rises in absolute terms.

- Option 4: Baxter’s Law

- This is not a widely recognized economic principle and may not have relevant context.