How is 'Raja yoga' commonly understood?

'Raja yoga' is commonly understood as "the royal path." This term reflects its significance within the yoga tradition, where it is viewed as a comprehensive system that encompasses the philosophy and practice of yoga, particularly the mental and spiritual aspects. The term "royal" implies that this path is considered a noble or superior approach to achieving self-realization and mastery over the mind and spirit. It emphasizes the importance of meditation, concentration, and ethical living, which are central features of this practice.

In contrast, the other options represent different aspects of yoga traditions. The subtle path might refer to more esoteric or nuanced practices, while the path of devotion is specifically associated with bhakti yoga, which focuses on love and devotion towards a personal deity. The practical path could imply a focus on asanas or physical practices without the deeper meditative or philosophical components emphasized in Raja yoga. Thus, "the royal path" accurately captures the essence of Raja yoga as a holistic and esteemed approach in the broader yoga spectrum.