The option that best describes the topic where the doctor promoted reducing caloric intake as a means to increase longevity is: B) A calorie-restricted diet.
A calorie-restricted diet is a meal plan that aims to cut off excess calorie intake to improve longevity.
Elements of this concept can be seen in the advice of the doctor who encouraged the reduction of caloric intake by 30 to 50% to increase a person's life span.
Learn more about a calorie-restricted diet here:
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