SolidWorks | Challenge 27

This is the 27th exercise of the 30 Days Solidworks Challenge.
In the next coming days, you will learn all Solidworks 2D and 3D tools that are required for you to start with SolidWorks.

Here is the quiz question for this video, Answer it in the comment section.
1. For what the eye option used?
2. What is an offset tool?
3. Can we revolve boss/bass the sketch if any point is open?