Answer:
eqqus
Explanation:
Equus—the genus to which all modern equines, including horses, asses, and zebras, belong—evolved from Pliohippus some 4 million to 4.5 million years ago during the Pliocene. Equus shows even greater development of the spring mechanism in the foot and exhibits straighter and longer cheek teeth
C) To increase our understanding of general principles
It's about the way you should stand and the way your posture should be. It's also telling you your back is in a slightly 's' shape
,hope this helps answer your question
