<span>Metheny and Slusher. Hope this helps...</span>
One of the earliest of these these theorists was Fredrick Winslow Taylor.
Centrism is support of a balance between social hierarchy and social equality. Centrists are not strongly politically left or right wing.
The best and most correct answer among the choices provided by the question is the first choice. The Test Offensive was a major defeat of the Viet Cong. I hope my answer has come to your help. God bless and have a nice day ahead!