The correct answer is A) Zen.
The sect of Buddhism in Japan that promoted self-control, meditation, and martial arts was Zen.
Zen Buddhism in Japan is a form of life. Although Zen Buddhism originated in China, in the school of Chan, during the Tang dynasty, it arrived in Japan due to the influence of China in the Japanese islands.
Zen Buddhism has one important principle that is the training of the mind through focus and meditation. It is the contemplation of the inner being to progress in the spiritual life of a human.
That is why Zen Buddhism recommended the practice of meditation as a way to free the mind from human temptations. and to acquire self-control.
