Well, you were supposed to delete the Pitch object you built in Lab 1a and that would get rid of the Pitch records you had added to it then.
But now, it looks like you imported the Pitch records 3 times for some reason. And you seem to have deleted the 1st record that had P-000 as the ID.
At this point, you can restore that P-000 record by going to the Setup and clicking the App Launcher and typing in "Recycle" and selecting "Recycle Bin". It will list the deleted records and give you an option to restore them. So do that to restore P-000.
Then delete the other records with IDs, starting with P-010 and going above.
Well, you were supposed to delete the Pitch object you built in Lab 1a and that would get rid of the Pitch records you had added to it then.
But now, it looks like you imported the Pitch records 3 times for some reason. And you seem to have deleted the 1st record that had P-000 as the ID.
At this point, you can restore that P-000 record by going to the Setup and clicking the App Launcher and typing in "Recycle" and selecting "Recycle Bin". It will list the deleted records and give you an option to restore them. So do that to restore P-000.
Then delete the other records with IDs, starting with P-010 and going above.
Then you should be all good to go!