Final answer:
The tax paid on the first $46,000 of taxable income is $4,600.
Step-by-step explanation:
The marginal tax rate refers to the rate at which an additional dollar of income is taxed. In the given tax bracket, the income up to $46,000 is taxed at 10%. Therefore, the tax paid on the first $46,000 of taxable income would be 10% of $46,000, which is $4,600. So, option A) is the correct answer.