b. Ribbons - Powerpoint 2016 has a tabbed ribbon system that groups relevant menus together according to category. The ribbon contains a number of tabs, each having a separate group of commands. The tabs can be used to do most of the common tasks in Powerpoint.
Line graphs can also be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. Bar graphs are used to compare things between different groups or to track changes over time.
Answer:
I guess there isnt any password!
Explanation: