To assess the usability of a site, the designers of the site can ask visitors to perform a sequence of tasks and observe the problems they encounter

The largest gains in wages for public sector employees are reported for ________.

A. teachers' unions B. firefighters C. telecommunication unions D. postal services

Credibility is made up of the combination of our current knowledge, ________, and

professionalism. a. who we know b. reputation c. physical appearance d. ideas