Final answer:
The maximum salary deduction allowed is 50%.
Step-by-step explanation:
The correct answer is b) 50%.
The question is asking about the maximum salary deduction allowed. In the given information, there are different deductions and tax rates mentioned based on the amounts earned. However, the highest percentage mentioned is 39% for an amount over $15,000,000. None of the options provided match this percentage, so the correct answer would be the option that is less than 100%. This makes option b) 50% the closest choice.