The Critical Period Hypothesis (CPH) states that the first few years of life constitute the time during which language develops readily and after which (sometime between age 5 and puberty<span>) language acquisition is much more difficult and ultimately less successful.</span>
Rest, elevate, ice it and take an antinflamtiory
A. The balance needed to hold a handstand without falling.
Skill-related fitness is something that your body needs to be trained to do and need focus to complete. The other answer options are your body's physical capability rather then something that takes skill and needs practice, such as balance.
