Why did the creation of arpanet with this critical need?
scientists needed a way to work together to share their research and findings.
darpa wanted to launch its own satellite.
the us department of defense was interested in darpa.
scientists were not good at communicating.

its A) Scientists needed a way to work together to share their research and findings.

Explanation:

answerapplication;

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt