Final answer:
The account least likely to be used by a tax agency fund is 'Dues to other funds and units'. Taxes are the largest source of revenue for local and state governments, well over one-half of the total. Other sources such as grant money and licenses contribute but are significantly lesser.
Step-by-step explanation:
The account least likely to be used by a tax agency fund is d) Dues to other funds and units. A tax agency fund is primarily concerned with collecting revenue such as taxes and then distributing those funds to the appropriate governmental units. Thus, 'Dues to other funds and units' does not regularly feature as an account within this type of fund since the focus is more on the collection side rather than on what might be owed by the agency to other entities.
Moreover, regarding the sources of revenue for local and state governments, the most accurate statement is a) Taxes generate well over one-half the total revenue of local and state governments. Taxes are indeed a major source of revenue for these levels of government, typically comprising a significant majority of their funding. Property taxes, income taxes, sales taxes, and other forms of taxation contribute to this significant share of revenue. Additionally, local and state governments do receive a portion of their revenue from grant money, but this does not typically reach between 30 and 40 percent. Revenue from licenses and certificates is also a part of their income but is not comparable in magnitude to tax revenue.