In his 1991 book, Oliver L. North claims that Reagan knew about the use of residuals for the Contras. Which fact from "The Iran-Contra Affair” makes North’s claim more credible?

North’s claim is more credible if another senior official knew about the diversion of funds. Choice A says North diverted funds with the full knowledge of Reagan’s national security advisor, which supports the possibility that Reagan also knew. The other choices describe resignations, legal outcomes, or the number of people charged; they do not directly support North’s claim about what Reagan knew.

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