I was working on this project, and out of the blue, when I right click, Blender crashes. It only happens in this project, and I'll attach the project.I'm fairly new to Blender. This started occurring after a test render
Use Outliner to select the object that causes this problem.
And avoid subdividing objects more than 4 times as this may be too much for your hardware.
Almost three million faces for such simple objects is a bit of an exaggeration, most likely it's beyond the limit of what your computer can handle.