Not remembering where you are in your material during a presentation or using a visual aid in an uncertain manner can weaken:

The four models of communication include:

a. one way, two way, interactive and transactional b. linear, two way, interactive and constructivist c. linear, constructivist, transactional and interactional d. one way, two way, transactional and constructivist

Headlines serve all of the following functions except:

a. Capture audience attention b. Select one's audience c. Replace body copy d. Enhance a visual