This is not a question but, an answer.

rounding can be useful in daily life by
a: making edges smoother.
b: allowing you to add numbers in your head quickly.
c: allowing objects to appear round.
d: making numbers round.

the answer
b: allowing you to add numbers in your head quickly.

While inserting images, the picture command is usually used to insert photos from a digital camera, and the clip art command is usually used to a.edit the sizes and other characteristics of photos that have been inserted. b.take a screenshot of an image and copy it to the clipboard for pasting. c.search for drawings or other images from a library of prepared pictures. d.make illustrations using lines and shapes that are easy to manipulate.