Concept:Public opinion is the collective view of the people on issues of public importance.
Explanation:Elections, political parties, and mass media all help citizens express or form public opinion.
Elections allow people to show their preferences through voting.
Political parties aggregate and communicate the views of different groups.
Mass media spreads information and shapes public discussions.
The cabinet, however, is a small group of senior government officials.
It makes decisions and implements policies rather than serving as a channel for forming public opinion.
Thus, the cabinet is not a channel for public opinion.
Answer:C. cabinet