18. According to paragraph 2, which of the following statements is true? (A) Mindfulness and self-regulation improve activation and connectivity in the brain and digestive systems. (B) A wide range of industries, including the performing arts and health care, are using mindfulness more frequently. (C) Everyone has an innate capacity for awareness, so it is unlikely that using the mindfulness approach will retrain the mind. (D) Our ability to more effectively self-regulate our feelings and concentration can be inhibited by the diversity of our thoughts.