Question

As of 1973, the U.S. had a population of 210 million people, who were increasing by 0.8 percent per year. Outside our lifeboat, let us imagine another 210 million people (say the combined populations of Colombia, Ecuador, Venezuela, Morocco, Pakistan, Thailand and the Philippines) who are increasing at a rate of 3.3 percent per year. Put differently, the

doubling time for this aggregate population is 21 years, compared to 87 years for the U.S.
What rhetorical device does the author use here?
A. Logos
B. Ethos
C. Audience
D. Pathos

Answer 1

A; logos. 

The auhtor uses data and statistics to back up his/her argument.

Answer 2

The answer is:

A. Logos

Logos is the use of words to persuade an audience by showing him facts, statistics, logical data, and appealing to their logic or common sense to make a decition.