Which method is an easy way to find a short description of a function?

a. in the insert function dialog box, click the function name to get a short description.
b. open from the backstage view to find a list of functions.
c. insert the function and right-click it in the cell to access a description.
d. use the search tool to find a list of functions and their descriptions.

A...In the Insert Function dialog box, click the function name to get a short description.

Explanation:

would be A

In the insert function dialog box, click the function name to get a short description ( A )

Explanation:

Clicking the function name inside the insert function dialog box will bring up a short description of the function. or simply hovering your cursor over a function that you intend to add to your document under the insert tab will as well give a brief description of the function.

opening help from the backstage view to find a list of functions is another way but it a very long and frustrating way because there would be alot of functions found and finding an exact function and its description wont be easy.