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Problem:

Can anyone help it was actually asked in exam as following and I need to know whether my answer was right or not?

In most programming languages, before you can use any variable, you must include a ____ for it?
a. declaration
b. definition
c. header
d. proclamation

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Solution:

Let me try to help you with your query.

As per my experience and knowledge 

The correct answer is: ​Declaration

  
Hope this might help you.

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