Complete the passage by choosing the best option A, B, C or D to fill in each blank. Television is (01)______ form of entertainment in the American household. People of (02)______ ages use this medium to entertain themselves for an average of four hours a day. Thus, television has had a tremendous influence (03)______ its viewers, especially children. Scientists now say that children can be negatively affected by constantly (04)______ television. This is due to the fact that they participate less in physical activities, spend (05)______ time reading and studying, and see a world of violence that can affect their own feelings of security.