Final answer:
Objects used to generate PDF quotes in a CRM system include Opportunity, Quote, and Product, which carry sales, pricing, and product details respectively.
Step-by-step explanation:
The objects that can be used to generate PDF quotes in a typical Customer Relationship Management (CRM) system are an Opportunity, Quote, and Product. CRM systems like Salesforce allow users to create PDF quotes by pulling data from these objects. An Opportunity object holds the sales and forecasting information, a Quote object captures the proposed prices for products and services, and a Product object contains details about the goods or services that are being offered to the customer. Therefore, the answer to the question is 'a. Opportunity, Quote, Product.'