Which of these is a valid use of the reply all feature?
a).correcting someone's spelling mistake in an e-mail
b).responding with "i agree" or "me too"
c).responding with " take me off your list"
d).none of these
update the answer is: (d)

What need most led to the creation of the advanced research projects agency network? darpa wanted scientists to be able to collaborate and share research easily. darpa wanted american and russian politicians to be able to communicate. darpa wanted astronauts to be able to contact nasa and the white house. darpa wanted factory owners to be able to coordinate supply chains.