Final answer:
The correct staffing requirement for a business needing one cashier and one person answering phones is one cashier and one person answering phones. This combination fulfills the specific staffing needs stated for the business operations.
Step-by-step explanation:
The staffing requirement for each day in a business that necessitates the presence of one cashier and one person answering phones is one cashier and one person answering phones. The options provided indicate different combinations of staff members, but based on the requirement stated in the question, the correct combination is to have one individual designated as a cashier to handle in-store transactions and another individual to manage telephone inquiries. This staffing structure ensures that both critical roles are filled, allowing the business to operate smoothly and handle customer needs both in-person and via phone.