As various security plugins suggest, I changed the "wp-content" folder to be something else, and set the permissions to 755. However, I still get a "D" for:
Files & folders permission check
Insufficient rights on wp-content folder!
Insufficient rights on wp-content/themes folder!
Insufficient rights on wp-content/plugins folder!
Am I still getting a "D" because your plugin does not understand that I changed the name of the "wp-content" folder and it just cannot find it? Or is there a bug? Or do you know of a way to fix it?