Which of the following best describes 'Yama' in yoga?

'Yama' is best described as restraints or rules of conduct in yoga. This concept comes from the foundational text of yoga, the Yoga Sutras of Patanjali, where it outlines ethical guidelines intended to govern interactions with oneself and others. The Yamas emphasize moral principles such as non-violence (Ahimsa), truthfulness (Satya), non-stealing (Asteya), continence (Brahmacharya), and non-possessiveness (Aparigraha). By adhering to these principles, practitioners create a positive foundation for their yoga practice and enhance their personal development.

The other concepts detailed in the choices do not capture the essence of Yama. Disciplines of meditation refer to practices aimed at achieving a meditative state, while breathing techniques focus on controlling breath (Pranayama). Postures and poses relate to Asanas, which are the physical aspects of yoga practice. Each of these elements plays a crucial role in yoga but is distinct from the ethical framework provided by Yama.