From the passage we can infer that real happiness of life belongs to those ______.A．who ar

From the passage we can infer that real happiness of life belongs to those ______.

A．who are at the bottom of the society

B．who axe higher up in their social status

C．who prove better that their fellow-competitors

D．who could keep far away from this competitive world

请帮忙给出正确答案和分析，谢谢！