Sketch is not letting me select lines for a solid extrude in a teaching Doc

CobraDesign47

Hello, I am doing the Multi-Part Part Studios portion of the Onshape Fundamentals: CAD course. I am on step 10. I used the document linked in the course as the sketch Profile, but when I go to select the Profiles for a solid Extrude, the lines aren't turning orange and being selectable. Instead of being solid lines, they're dashed. When I'm not in an extrude feature, they are selectable! If I select them then go into an Extrude feature, the Extrude turns into a Surface Extrude. I don't know what to do, and I would really like to finish the course! If you guys would please help me that would be great! Thank you for your time and I look forward to your response. 

https://cad.onshape.com/documents/a845667f142fb0d734bc27af/w/6b726707832d44fb31607045/e/7829166c766b25fe2ac1f62b?renderMode=0&uiState=64d8d1effec8432ab460368

GWS50

It looks like you have both the previous sketches visible - Large Arm Grip Sketch and Small Arm Grip Sketch. These may be obscuring the view of the circles you are trying to select. Try hiding these sketches and have another go.

CobraDesign47

Thank you GWS50! That helped. I played around with hiding sketches and it solved the problem. Thanks!