Final answer:
When the reserve ratio is 4%, the money multiplier is found by dividing 1 by 0.04, which equals 25.
Therefore, the correct answer is B) 25.
Step-by-step explanation:
If the reserve ratio is 4 percent, then the money multiplier is calculated by taking 1 divided by the reserve ratio. Given a reserve ratio of 0.04 (or 4%), the formula for the money multiplier would be 1 divided by 0.04. The result of that division is 25.
The money multiplier can be calculated using the formula 1/reserve ratio.
For example, if the reserve ratio is 4 percent (or 0.04), then the money multiplier would be 1/0.04, which is equal to 25.
Therefore, the correct answer is B) 25.