Process on how communication works

Sender: This is the person that is delivering a message to a recipient.

Message: This refers to the information that the sender is relaying to the receiver.

Channel of communication: This is the transmission or method of delivering the message.

Decoding: This is the interpretation of the message. Decoding is performed by the receiver.

Receiver: The receiver is the person who is getting or receiving the message.

Feedback: In some instances, the receiver might have feedback or a response for the sender. This starts an interaction.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

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explanation: