Learn Web Accessibility - Quiz: Missing materials?

In the Fullstack Engineer course in section: 13. Making a Website Accessible. the quiz seems to ask a few questions about topics that we have not actually been taught yet… most of the questions have been mentioned and covered in articles etc… but the are 2-3 that have not even been talked about, I even went back through the articles to see if i missed something, which i did not.

Anyway this is just to point out to CodeCademy that maybe they should review this section and correct any mistakes or include any missing articles or materials.