Consensus is a general agreement. So I would definitely choose C. But for the second answer. it will either be B or D
Internal influences: Internal influences simply come from users' own mindset and way of living. These are all the personal feelings, self-conceptions, feelings , attitudes, ways of life, encouragement and recollection of consumers
External influences: Media, friends, family, environment and laws.
Hope this helped!
it might cancel out large quantities of salt that are not needed