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. garrett hardin, "lifeboat ethics: the case against the poor" how does this passage demonstrate the author's use of logos? a. it establishes the author as credible by quoting other authority figures. b. it contains facts and figures that to prove the author's point. c. it appeals to the feelings and emotions of the audience. d. it uses general facts in order to build toward a more specific theory.