Read this passage: 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. why does the author present these statistics? a. he is appealing to the audience's emotions. b. he is appealing to the audience's sense of humor. c. he is trying to establish his importance as a trusted writer. d. he is appealing to the audience's sense of logic.