Final answer:
Collecting taxes was not one of the functions of the Freedmen's Bureau; it was focused on social and economic help such as reuniting families, establishing schools, and aiding workers in securing labor contracts.The function within the 'Sales' class of transactions that is not a business function is processing customer orders.Thus the correct option is A
Step-by-step explanation:
The function which was not one of the Freedmen's Bureau's responsibilities is collecting taxes. The Freedmen's Bureau was created to assist newly freed slaves and impoverished whites in the South after the Civil War. Its functions included reuniting families that had been separated by slavery and war, establishing schools to provide education, and helping workers secure labor contracts to ensure fair employment. Collecting taxes was not part of the Bureau's mandate, as it focused more on social and economic assistance.