The description for "Enable conditional access" currently says:
"When enabled, this lets you set conditions (based on date, grade, or completion) that control whether an activity can be accessed."

This suggests that conditional access is available for activities but not necessarily for resources. I would suggest to change the text and mention resources as well. I don't think we have a noun that would cover both "activity" and "resource", so the text could simply be:
"When enabled, this lets you set conditions (based on date, grade, or completion) that control whether an activity/resource can be accessed."