How do I change the way I highlight text in Android Studios in mac?

I have a pretty weird problem. I am currently using Android Studios on a MacBook Pro, and when I mark my text (by clicking and dragging the cursor), it does not highlight the text row by row. Instead, it marks the text exactly as I move the cursor, without any consideration of the lines. Does anyone know how to change this, so I mark the text in the normal way, so if I move the cursor three lines up it marks the whole lines and not just a part of the lines?

Looks like you got stuck in Column Selection Mode. Since this happens to me on occasion, to fix uncheck "Column Selection Mode" from the Edit menu.