Answer:
A. 20%
Explanation:
100mL is the same has 100 grams. Therefore 20 grams of a 100 gram solution would be 20% of the solution.
I believe the answer is b
Right Click.
Clicking the right button of the mouse (right click) will give you the list or related commands. It is the shortest way to go to menu. If you want to copy the document or rename it, right click the document you want to copy, select copy if you want a copy and select rename if you want to rename the desired document. Clicking the right mouse button will give you related command. Related commands because, the shortcut menu will depend on the icon that you have pointed and right clicked.
The amount and how one is more than the other