1. in blender®, which interface principle corresponds to the user interface that allows a user to view all options and tools at a glance with pushing or dragging editors around? (1 point) non-blocking non-overlapping non-modal non-confrontational

Option-(B):Non-overlapping

Explanation:

As the blender when opened in the system or User Interface system, we see that it happens to be having the same features across the system. And there is a form of consistency across the systems, if we look into the user interface model(UI). As there are three main portions of the "Blender window" inside the U.I system. These three portions are Top bar, bottom bar and the Space in between the two bars.

As the system or the set of colors found on the screen and that mentioned in the manual are the non-overlapping.

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