The correct answer is All of these.
A slide can have more than one title, it can have as many titles as you want. Titles, subtitles, sub sub titles etc.
A slide can have more than one text box, again it can have as many as you want. Ideally you don't want too many as the slide will look crowded and messy but if that is what you want then it is possible.
A slide can have text boxes and drawings, you are not limited in this.
There is a lot of creative freedom in what can be added to a slide in a presentation. Just tailor it to your needs.