You have collected a small amount of soil you believe a suspect left behind in a boot print at a crime scene. What type of sample is this? A known sample
A personal sample
A questioned sample
A comparison sample

known sample

Explanation:

if the suspect is one that you are after, you must have known where they went and how they went, so if that was a dirt sample, you might know which way they gone and that soil might be known because the suspect had the sample.

i don't know, maybe i'm wrong but it seems to me that it is a known sample

¯\_(ツ)_/¯

nobody knows