The app allows you to create visually dynamic newsletters, presentations, and create communication pieces from just about any resource you can access.
onedrive
onenote
cloud
sway

The Sway app is the right answer.

Explanation:

Sway can create prominent newsletters, striking presentation and also documentation in no minute. It’s a product from Microsoft. Sway provides features to add content from anywhere viz. you tube, one drive etc. You can get beautiful design for the content creation, Attract targeted audience with canvas and many more.

OneDrive: Cloud storage is to store files, photos and it provides the user an easy access from any device.

Cloud: A common term which means remote storage and retrieval

OneNote: It’s a “free-form information gathering tool”. We can create contents, synchronize and collaborate with others.

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