sketch curve selectoin

Hi, I'm currently following the Handle tutorial on the Surface Modeling course: https://learn.onshape.com/learn/course/onshape-surface-modeling/manipulating-surfaces/exercise-handle?page=2 I seem to be stuck trying to create the loft on steps 4 and 5, specifically selecting the guide curves. I'm not sure what I'm doing…

Greetings, I frequently have overlaying curves in my sketches (for example, a line in construction mode and a shorter line on top of it as a solid line that I plan to use to build my part). Is there a way to select just the shorter solid line but not the underlying construciton line? Can't seem to figure out how. Thanks