Final answer:
A person preferring solitary activities over sociable ones would likely adopt an introverted style, which describes someone who finds energy in their inner psychic activity rather than social interactions.
Step-by-step explanation:
A person who prefers to pursue solitary leisure activities over people-oriented activities is most likely to adopt the introverted style. The term 'introverted' pertains to individuals who may be quiet and reserved or may have social interactions but generally derive their energy from within, from their inner thoughts and feelings, as opposed to external stimuli. According to personality psychology, particularly the work of Carl Jung, introversion is contrasted with extroversion, the latter of which describes individuals who are outgoing and energized by social interactions. The concept of introversion is integral to various models of personality and reflects a preference for quiet or solitary activities over sociable and group-oriented endeavors.