which of the following is an important limiting factor in the application of division of labour?

The correct answer is "market size". Division of labor is a system of organizing work in which tasks are divided among workers to increase efficiency. However, for division of labor to work effectively, there must be a large enough market to accommodate the increased production that results from specialization. If the market is too small, there may not be enough demand for the increased production, and specialization may not be worthwhile. Therefore, market size is an important limiting factor in the application of division of labor.