So if it is all so precarious at times of bumper harvests, what will happen if -or rather, when we get a really bad one? that is what is worrying lester brown, president of the washington-based earth policy institute, whom i first met at the 1974 conference. which rhetorical technique is lean using when mentions that he knows lester brown? a: biasb: logosc: ethos d: pathos

C: Ethos

Explanation:

In this text, the author is employing the rhetorical technique of ethos. Ethos refers to an appeal to credibility. It is employed when a person wants to persuade the audience of a particular position by appealing to his own credibility. For example, in this case, the author tells us that he knows Lester Brown. The author wants to convey the fact that he knows Lester Brown personally so that his claim gains more credibility.