Final answer:
The effective tax rate for Wilcox depends on their income bracket, which is not provided in the options. Based on the given information, the effective tax rate would be either 34% or 35%.
Step-by-step explanation:
The effective tax rate for Wilcox can be determined based on the provided information. The tax rates in the given reference indicate a flat 34% tax rate on incomes from $335,000 to $10,000,000, gradually increasing to a flat rate of 35% on incomes above $18,333,333.
To find Wilcox's effective tax rate, we need to determine the income bracket that Wilcox falls into. Since the provided options do not give the exact income amount, it is not possible to determine the exact effective tax rate for Wilcox.
However, based on the given information, we can conclude that Wilcox's effective tax rate would fall either within the range of 34% (option a) or 35% (option d), depending on the exact income Wilcox earns.