The best and most correct answer among the choices provided by the question is the third choice "cardiorespiratory fitness"
Cardiorespiratory fitness<span> is the ability of the body's circulatory and respiratory systems to supply fuel and oxygen during sustained physical activity.</span>
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Most people start to face new issues at the ages of 11-13 some may gain this at older ages, but it typically starts around that time, some causes of this are: Puberty;School; Problems at home; etc.
