C. Boris adds yoga to increase meditation and increase flexibility is the correct answer.
Explanation:
To explain the correct answer, the discard method is very helpful. Since Boris wants to control wellness and stress the first two options might not be the most proper options. The first one refers to decrease calories, which can lead to anxiety if it is not done properly; on the other hand, the second option could be counter-productive since adding calories can lead to overweight and other diseases. Letter D might not be very useful since more work to be done can create more stress and put Boris under more pressure. Finally, letter C is the correct answer since yoga and meditation can help him spot his weak and strong points and, at a certain point, Boris might fix them.
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