A already assigned variable cannot be assigned twice You can make the variable change over to a new one or call a whole new one to assign one without a value or It might be possible to do v=n (v is variable and n is number / value)
To direct the employees and respond to any calls/emails regarding a problem or upgrade that should be changed/fixed. (I don't know if that's what you wanted)
Answer:
Information technology can be used to promote opportunities for knowledge dissemination.
Explanation:
It can help the teachers and students have up-to-date information and knowledge. The accurate and right information is necessary for effective teaching and learning; and information technology