How do I answer each type of question in a quiz? 

To answer an essay question, click the text box and type your content in the Rich Content Editor [1]. You can use the editor to format your content. The Rich Content Editor also includes a word count display below the bottom right corner of the text box

To answer a file upload question, click the Choose a File button. Canvas will open a file dialog box where you can locate the file on your computer. Select the file and it will be uploaded as your answer. Canvas will confirm that your file has been uploaded [2]. You can also remove your file by clicking the remove icon [3] and submit a new file.