Final answer:
The correct option is D. In 2015, Forest Corp. had before-tax earnings of $315,000. Using the tax rate structure, the corporate taxes paid would be $107,100.
Step-by-step explanation:
In 2015, Forest Corp., a U.S. MNE, had before-tax earnings of $315,000.
To calculate the corporate taxes paid, we need to use the given tax rate structure.
According to the information provided, the tax rate for incomes between $335,000 and $10,000,000 is a flat 34%.
Therefore, the amount of corporate taxes paid by Forest Corp. in 2015 would be:
$315,000 x 0.34 = $107,100