Edit or lack of

I loaded the Wav file and selelcted the part I want to delete and nothing happens. I’ve tried hitting the delete button and control x and control k - nothing happens it won’t let me delete the selected section intro of the WAV file I opened. Any advice/suggestions please?

Press the yellow Stop button. Please see this link http://manual.audacityteam.org/o/man/faq_editing.html#grayed .

Also note that most Audacity shortcuts on Mac use COMMAND, not CTRL.