In modern American families, grandparents play less of a role in their grandchildren's lives as they did in earlier times

The Brookhaven National Laboratory decided to announce a major discovery in nuclear physics ________

A) at a scientific conference B) at a congressional budget hearing C) at a news conference D) in a news release E) on television

Mary lists the essential steps in changing the oil of a car on a poster for her demonstration speech. This poster serves to aid Mary's speech by

a. adding persuasive impact to her message. b. adding to Mary's logos by showing her listeners that she is well prepared. c. enhancing listener comprehension and memory. d. defining in detail the points to be covered in the speech.