I would most certainly say that it is possible to use only credible sources. It is definitely in our best interest to always use credible sources, though it may not always be possible in some situations.
The thesis for this should be: The life of a villager and a confederate citizen are different in many ways such as (Give your three reasons here).
The intro for this should be: Imagine getting a letter from a person with a completely different lifestyle. This depicts the difference between a villager and a confederate citizen. (Add thesis here)
Hey! I hope you are doing okay, and here is my answer with my own words, all I hope is you turn my words into your own :)
Illustration is a very important text feature because it provides an imagery to the reader. Illustration is what makes a story more interesting. It provides a base for the imagination the reader can create in their mind.
Honestly I hope this is what the question meant. Good luck!