Which of the following could be seen as a challenge within Raja yoga?

Distractions during meditation are indeed a significant challenge within Raja yoga, which is often referred to as the "royal path" of yoga. Raja yoga emphasizes the practice of meditation and controlling the mind to achieve self-realization and inner peace. The practice involves deep concentration and stilling the mind, which can be quite challenging due to various internal and external distractions. These distractions might include thoughts that arise from the mind, physical discomfort, or environmental disturbances. Overcoming these distractions is essential to progress on the path of Raja yoga, as it allows practitioners to connect more deeply with their inner selves and achieve the meditative states that characterize advanced practices in this tradition. Thus, recognizing and addressing distractions directly impacts the effectiveness of one's meditation practice, making it a central challenge for practitioners.