Answer: c. Five months
Explanation:
The digestive system in infants is weak and is incapable of digesting solid foods in young age typically in one or two months after birth. According to the american academy of pediatrics. The infant must be fed with solid foods in 4-6 months. It also depends on how the infant responds when fed with different solid foods. The solid food must be in highly diluted form, like in a meshed form and must be boiled so that the infant can swallow and digest the food easily.
Explanation:
a) This is a retrospective observational study.
b) This is an appropriate choice due to the rareness of MS.
c) The subjects were US military personnel, some of which had developed MS.
d) The variables were the vitamin D blood levels and whether or not the person developed MS.
B. ( I have a history of diabetes it's been in my family for 29 years)
Answer:
that the body can recover by itself
Explanation:
In the first study (Vermont prison study) the volunteers gain around 20 % more of their normal weight by changing their diets with more carbohydrates and oils, but after some months, when they stop this diet, the body can recover their metabolic rates, because the amount of fat cells they just expand, they did not produce more.
In the second study (semistarvation study) the scientist discover that having a diet low in carbohydrates and doing plenty of exercise, simulating the conditions of population in the second world war, they discover that the effects in the body it was not just physical (lost of weight at around 25 %) but also phycological, they become sluggish, depressed and irritable. Also the metabolic rate decelerates to be used to the small quantity of calories in the body.
Hope this info is useful.
B) Dietary supplements as they are completely optional
