Because the subject of a composition is like a crystal with many facets, you should
a. be very critical of your sources.
b. offer your reader ideas from several sides.
c. pick one point of view and stay with it.
d. offer a positive idea for every negative one.

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.