Some immigration applications require you to prove either continuous residence, continuous presence, or both. The difference between the two terms is confusing, but, you can prove both requirements using the same evidence.
Some immigration applications require you to go to a biometrics appointment. Also known as an ASC (Application Support Center) appointment, the main purpose is for Immigration to take your picture and fingerprints for their records.
To show U.S. Immigration that you have good moral character you must present a case that you are an upstanding person, but more importantly, you need to know how to defend any potential problems on your personal record.