Which is not a benefit of studying public speaking? a. creates good first impression on others b. communicates competence c. proves our expertise d. develops our ability to communicate ideas and message clearly and with impact

May someone me answer these questions

Which of these novels is considered an important precursor to science fiction

Consider the title and souce of the following articles. which one is most likely to exhibit a bias? (a) how to roast beef," by the food editor of a magazine (b) americans experiencing greater fatigue than previous generations, " by a harvard researcher (c) "americans' worsening eyesight not related to computer screen usage," by the public relations director of a major computer manufacturer (d) "sharing the burden: a history of cooperation," by a college professor