All could be true. D mainly
Other than that, they serve as riding animals, both for the daily work of the nomads and in horse racing. Mongol horses were a key factor during the 13th century conquest of the Mongol Empire. ... Men do the herding, racing and make the tack. Traditionally, men (or in modern times, women) also milk the mares.
Explanation:
Some of the following factors can be the reasons or the causes that the teens may engage in some bad habits :
Pressure from friends or peers.
Trying to experience a level of excitement.
Excessive curiosity of the teenagers.
Academic Pressures.
Curiosity to enjoy adventurous life.