gmatrant wrote:Originally developed by ancient Hawaiians, surfing appeals to people due to the sport's unusual confluence of adrenaline, skill, and high paced maneuvering, an unpredictable backdrop that is, by turns, graceful and serene, violent and formidable, and the camaraderie that often develops among people in their common quest to conquer nature.

1.surfing appeals to people due to the sport's unusual confluence of adrenaline, skill, and high paced maneuvering, an unpredictable backdrop that is, by turns, graceful and serene, violent and formidable, and the camaraderie that often develops - Can you anytime say sport's skill?


2.surfing appeals to people due to their unusual confluence of adrenaline, skill, and high paced maneuvering, an unpredictable backdrop that is, by turns, graceful and serene, violent and formidable, and the camaraderie that often develops - their clearly refer to people and you can say peoples' skill, therefore, this is correct

Choice 2 is the right answer. If I have to split and right this into parallel sentences how can I do so.
I am not able to split them into parallel structures. Can the experts please help.