Composite questions are those made up of more than one radio question. The following are all composite questions:
Component questions are the individual radio questions that make up composite questions.
The checkbox question, "Which of the following forms of advertising most influence your purchases?" is a component question. If you search the InsightStore for "advertising" and your search filters include checkbox questions, you will find it in the results list.
Its answer options, such as "tv" and "Internet," are component questions. If you search for "advertising" and limit your results to radio questions, these, along with the checkbox question's other answers, will appear in the results list. That's because all component questions are radio questions.