Two answers could be correct both B and D it does depend on the type of health work you are working in if you swim you burn calories and energy so being rested is a positive answer however by many health organizations or people in general 30 minutes is a safe time to swim after digestion, but if I was to say a more accurate answer would be B
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The Corpus Callosum is what joins the two hemispheres of the brain.Hope that helps .
Lungs with cause a reaction which feels like chocking and it’s worse with bronchial asthma trust me I know from personal experience