If you read the instructions - it says, if you have a valid passport then send that plus 1 valid govt ID. ID must have photo, and date of birth. So you send your passport, as requested plus one piece of ID that meets the requirements. Don't over think it
photocopies of 1 piece of government issued identification with your name, date of birth and photograph
This means to provide a copy of 1 piece of government issued identification as described above in addition to the info page of your passport (the one with your photo on it).
All answers to your questions are in the instructions found at the web link above. I promise.