Final answer:
The word 'income' is the best replacement for 'revenue' in the sentence, as it refers to the earnings a company or organization receives from its business activities.
Step-by-step explanation:
The best word to replace revenue in the given sentence is income. This is because revenue is defined as the income that a company or organization receives from its normal business activities, typically from the sale of goods and services to customers. In the context of the sentence, it is discussing how much money the advertising brought in, which is synonymous with income.
Moreover, looking at the varying sources of government revenue, such as income taxes, payroll taxes, and excise taxes, we can see that the term revenue is commonly associated with the money collected by a government. Therefore, option a, 'income,' is the closest in meaning to revenue and can be used interchangeably in the context of the passage.
In the given sentence, the word 'revenue' refers to the income generated by the advertising pieces. So, the word that could best replace 'revenue' in this sentence is income.