The research and development team will gather important information by first using data. secondary primary focus group

The answer is "secondary data".

Secondary data refers to the information or data that have been already gathered by and promptly accessible from different sources. Such information are less expensive and more rapidly possible than the primary data or information and furthermore might be accessible when primary data can not be acquired at all.Common sources of existing secondary data or information incorporate information gathered by government open administrations divisions, libraries, web seeks and censuses, for example, the United States Census. Organizations utilize statistical surveying to draw on existing data from online networking as a source of secondary data.

Good it’s definitely option a