Which scenario correctly applies the concept of Rate of Perceived Exertion (RPE)?

RPE is a person’s rating of how hard exercise feels, often on a 1–10 scale. An RPE of 7–8 feels vigorous, so a runner aiming for moderate intensity during a long run should slow down when effort reaches that level. Choice D correctly applies RPE to adjust intensity; an RPE of 1–2, as in choice C, would feel very easy rather than high-energy.

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