The most common site of back pain is in the lumbar (lower back) area.
i would think for it to be C allthough im not entirely sure to me its between B and C but C makes alot more sense.
The food and nutrition board is recommending 60 minutes daily physical exercise for an individual to prevent weight gain. Although in reality it also depends on the type of body of the individual. Sometimes an individual needs to gain weight proper proper to his or her age. But the answer to your question is letter A - 60 minutes daily.
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Yes? It depends on the person really. For example, how it affects the child's mindset. Some may cope differently, so I can't give you a definite answer.
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