"on the left end of the title bar is the toolbar, containing buttons for saving a file, undoing an action, and redoing an action. a. insertion point b. quick access c. quick click d. document"

b) Quick access toolbar

Explanation: Quick access toolbar is the toolbar present in the title bars' end towards the left corner side. It is quite small toolbar that can be customized accordingly . It contains the tool that are used for giving the frequent commands in an independent form . It most commonly displays the button of the re-do, undo, saving a document or file. Therefore , the correct answer is option(b).