The thing which Katniss means when she says "a spark could be enough to set them ablaze?" is that all it takes is a little thing for violence to occur.
The possible reason why the people in District 11 could "be set ablaze" is because of the oppressive Capitol which keeps armed guards and a walled fence.
What is a Context Clue?
This refers to the hints which are given to help a person understand important details in a story.
Hence, we can note that from the complete text, there is the use of context clues to show the effect of an oppressive Capitol can have on the peole of District 11.
Read more about context clues here:
https://brainly.com/question/26349330
