According to SustainAbility, what is the reason for the appearance of so many different de

According to SustainAbility, what is the reason for the appearance of so many different definitions for globalization？

A．There"s no authoritative definition for globalization.

B．Others" definitions are more convincing than professor Levitt"s.

C．Different people have different ideas on globalization.

D．Things are different after two decades" time.

请帮忙给出正确答案和分析，谢谢！