Can Theories of Motivation Be Used to Recommend Practical Applications

Multiple Choice

Can theories of motivation be used to recommend practical applications to improve people's lives?

A) No, the real world is just too messy for practical applications of theories of motivation.
B) No, typically theories are guidelines with little or no truly useful applied value.
C) Yes, once validated, theories can be used to recommend practical applications.
D) Yes, so long as practical application takes precedent over theoretical speculation.