It could be better if we place the lesson "Embedding a Pega Application as a Gadget" under “Extending UI”

As such it’s placed under “Navigation” and it does not look relevant there.

The fourth option should read, " We can adjust a gadget's height, widht and margins." The response to the question is correct. Thanks for catching this.

Thanks PASHM.

Also the following lesson looks incomplete. 

Extending UI >>> Creating Purpose Specific Controls >> Defining a New Custom Control

At the end of the lesson "tools" is mentioned and it stops there. What are all done after that to create a custom control ?

Getting Started >> Dissecting UI >> Mobile Vs. Desktop Design

A transcript has not been provided for this video.

Thanks for your feedback. This video does not have a transcript. We will add a note to make this clear.