<em>Your answer is:</em>
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B. Being at least 15 percent underweight.
Hope this helps C:
 
        
                    
             
        
        
        
Answer: 
Vitamins and minerals helps in the obtaining energy from the foods that we eat. The vitamins and the minerals in the body acts as co-factors which helps in the various metabolic reactions that takes place in the body.
The co-factors helps in the reaction as without co factors chemical reactions cannot takes place in the body.
The food that we eat is broken down inside the body and energy from the food reaches to the cell for their different functions. 
 
        
             
        
        
        
The correct option is B.
Vitamin B12 are a set of  water soluble related substances, which are very important for the proper functioning of some body enzymes and they are usually found together in the same food. Foods that are rich in Vitamin B12 include:meat, fish, poultry, egg and dairy. Some people who are vegetarians and who do not eat these kind of food will benefit greatly from taking vitamin B12 supplement. 
        
                    
             
        
        
        
D. Chronic Obstructive Pulmonary Disease 
Explanation: Smoking can cause lung disease by damaging your airways and the small air sacs found in your lungs 
 
        
             
        
        
        
Answer:
For an improvement of the achievements, there is to train harder and to increase the overload., This means that to achieve an improvement, the athletes must work harder in the measure that they adapt to the previous training sessions that have been carried out. The first recommendation is to analyze and evaluate the current physical condition, and then slowly start exercising first, then you must increase the frequency and intensity of the exercises to achieve the desired results.
Explanation:
Once the current physical condition has been evaluated, a good plan could include the following exercises:
LEGS: 1. Front squat 2. Squat 3. Leg press 4. Deadlift 6. Heel lifts.
TRUNK: 7. Bench press 8. Bench crunches 35. Incline bench crunches 36. Seated crunches.
ARMS: 9. Shoulder press 10. Barbell bicep curl 11. Dumbbell pull-over 23. French dumbbell press 24. Triceps with pulley.