The human body readily responds to changing environmental stresses in a variety of biological and cultural ways. We can acclimatize to a wide range of temperature and humidity. ... This ability to rapidly adapt to varying environmental conditions has made it possible for us to survive in most regions of the world.
As of now, according to Olympics theirself, there is no age limit to join! Any age is welcomed; though the youngest competitor was 10 years of age!
Its the last answer there
It is NOT A. (the answer is b. words)
