What are Web sites that cater to a specific profession called?

A customer who reports that Lexus is the first car he thinks of in the "luxury automobile" category is describing a:

A) top-of-mind brand B) top-choice brand C) quality choice brand D) top-of-industry brand

How can conducting background research help the researcher?

A) Determine style and format of the report B) Identify primary and secondary audiences C) Understand the general topic D) Look for data that supports the researcher's position on the topic E) Establish a time line and budget for the project