That which represents a subsurface activity is:
What is a Sub-surface activity?
A sub-surface activity is an activity that goes beyond the topmost layer of the soil. Drilling is an activity that requires going deep into the soil. It is not a very simple task.
Big types of machinery are needed for this to happen. So, it qualifies as a sub-surface activity.
Learn more about drilling here:
https://brainly.com/question/14135315
#SPJ2
