In a digital era, free speech, especially via the Internet and mobile phones, has become a global issue

If a speaker wanted to show the relative proportions of the various parts of a whole, it would be best to

use a A) bar graph. B) pie or circle graph. C) line graph. D) picture graph.

What is the problem with trying to give a five-minute presentation on ecology?

A) Enough material could not be found. B) The audience would not be interested. C) The topic needs to be better focused. D) The topic is irrelevant.