Basal metabolic rate is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions. It affects your calorie needs because by knowing your BMR, you know how many calories to consume per day(minimum)
Your BMR: This stands for the basal metabolic rate that actually represents the minimal number of calories that your body burns while resting. This is the absolute bare minimum that you must consume so that your body can burn these calories on breathing, digesting food, and other involuntary actions.
The answer is C. nicotine. Tobacco is the carrier of nicotine. This stimulates the brain but also makes you dependent, which can eventually cause (life-long) addiction.
