Final answer:
QaziTech's practice of providing a website for customers to interact and solve product issues together is an example of a community support forum, ( option C) which utilizes crowdsourcing as a Web 2.0 strategy.
Step-by-step explanation:
When QaziTech customers go online to the company's website to search for answers or to interact with others who have had a similar problem with a product they have purchased, this is an example of a community support forum. This participation and engagement among users and customers are integral aspects of Web 2.0, which emphasizes user interaction and collaboration on the internet. By providing a platform for customers to help each other and share solutions, QaziTech leverages crowdsourcing to enhance customer service and product support.