Answer: Activities; opinions
Explanation:
Inventory is the list of items or stock available in hand. Inventories of activities or of opinions are essential to providing vast amounts of information concerning attitudes toward product categories, brands within product categories, and user and non-user characteristics. In this they often ask questions that are direct about personal interests, values, behaviors, and traits or personality types as regards products and brands. By collecting these, better strategies, methods, upgrades etc. can be applied towards increasing customer satisfaction and maximizing profits.