<span> a verbal </span>suffix meaning<span> “to make,” “cause to be,” “render” ( simplify; beautify); “to become,” “be made” ( liquefy). The </span>suffix<span> was introduced into English in loan words from Old French ( deify), but is also used in the formation of new words, usually on a Latin root ( reify).</span>
D is the correct answer because “of course you need to run more” is not parallel with the rest of the sentence. It should just be “running”
the answer is a. explicit.