Final answer:
A customer service manager would use a Dashboard to check which car rental location is renting the most cars daily, as it aggregates and visualizes real-time data for monitoring performance. The correct option is B.
Step-by-step explanation:
A customer service manager at a car rental company looking to check in every afternoon to see which car rental location is renting the most cars that day would most likely use a Dashboard. A dashboard is a tool that aggregates and visualizes data from various sources in real-time, allowing managers to monitor performance at a glance.
Marketing databases are typically used to store customer and market data over more extended periods and would not necessarily provide the immediate, daily rental figures. Customer surveys and focus groups are methods to gather qualitative data and opinions from customers and would not be suitable for real-time quantitative performance metrics.