The process by which information is exchanged and understood between people is called:?

A - Communication, it is the best tool for sharing/updating/ knowing process, policies, employee as a individual performer and for the information to be passed on. 

Communication is delivering the right information, in the right time, to the right audience to get the desired effect.

there are3 types of communication:

1- Push (like e-mails)

2-Pull (like file repositories)

3-interactive (like phone calls and video conferences)

Interaction is a type of communication that guaranties and ensures the message is delivered and understood through getting a feedback.

Transmission is the transfer of the communicated information through the media.

Transfer Effect is the result of Communication.

I would go for (interaction) not communication because of the word (Understood)

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MY answer will be AAAAAAAAAAAAAAAAAAAAAAAAAAAAA

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Communication is the answer that bridge the question and the rest

My Answer IS Option " A " Sir

"Communication" Sir. Thank you for your invitation

A ) Communication is the answer

Communication ........................The most powerful tool human possess by birth.

(A) , communication is the most appropriate choice 

MY answer will be A<<<<<<<<<<<<<<<<<<<<<<<<