Who introduced Liberal attitude regarding education and sports in Germany?

Correct option is A

John Basedow (1723–1790) was a German educator and one of the pioneers of physical education. He is credited with introducing a liberal attitude regarding education and sports in Germany, particularly by promoting physical education as an essential part of the school curriculum. Basedow's emphasis on physical fitness and holistic education contributed to the development of modern physical education in Germany.
Why the other options are incorrect:
(b) Niels Buck: Niels Buck does not have significant recognition in the context of introducing liberal attitudes toward education and sports in Germany.
(c) Adolph John: Adolph John is not widely known for promoting liberal views on education and sports in Germany.
(d) Ronald Joseph: There is no significant historical figure by the name of Ronald Joseph linked to education and sports reforms in Germany.