Final answer:
Staff management provides advice, support, and assistance to line management without being directly involved in core business functions such as production and marketing or in tax planning activities.
Step-by-step explanation:
The correct answer to the question about staff management is that it provides advice, support, and assistance to line management. Staff management is a type of management that is supportive and advisory in nature, rather than being involved directly with the core operations of the business such as production and marketing activities. The main role of staff management personnel is to assist line managers in achieving the organization's goals by offering expert advice and administrative support.
Staff management does not plan income taxes, sales taxes, and international taxes, as these are typically handled by finance departments and external entities that specialize in tax planning and compliance. They are also not directly responsible for achieving the goals of the organization; that is the role of line management with staff management supporting them. Moreover, staff management does not control the main business functions such as production and marketing; these functions fall under the purview of line managers.