Which of these tasks can be accomplished when the drop-down menu of the Bullets icon is clicked?

The answer is:

(1)Select the bullet, that is used in the list

(2)Defining the new bullet, which is used in the list

Explanation:

In the question, the choices were missing. so, we define the correct choice only.

In choices 1 and choice 2, both use the bullets, but in choice 1, it is used in the list, in which it is used to define the list options, and in the choice 2, it defined the new bullets in the list.  

solution:

the auto-correct option of the auto-correct tool enables you to add and delete words that do not follow abbreviation rules because:

it is a feature that allows outlook to correct common spelling and typing errors and to replace characters with symbols. we can also can use auto-correct as a shortcut, which means we can type a small string of characters and have those characters replaced by a longer string.

answer; defense;