difference between Effective communication and Efficient communication

 1. The principle difference between Effective communication and Efficient communication means that:

a. Efficient communications provide only the information that is needed whereas effective communications ensure the timeliness and the format of the communications
b. Efficient communications provide information to only the stakeholders who need it whereas effective communications ensure the guaranteed delivery of the communication
c. Efficient communications focus on the most appropriate communication channel whereas effective communications focus on the fastest communication channel
d. Efficient communications are optional whereas effective communications are required

I think correct answer is A)

 

A. Efficient communications provide only the information that is needed whereas effective communications ensure the timeliness and the format of the communications

 

RP, PMP

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As per PMBOK forth ed. page 252,  A is correct answer.