You need to provide sufficient ( ) on the topic to help readers have a basic understanding of the subject. A: background imformation B: cultural information C: econimical information D: educational information

Nowadays, if you want to sell a car ,what you should do? A: Go to post an ad on newspaper B: Find a second car agent to sell it C: Go to the local used car market D: Clip on website and share, repost the imformation