How many types of fingerprints can be rolled on the card?

The correct answer reflects the common practice in fingerprinting where two types of fingerprints are typically rolled on a card: the right hand and the left hand. This method captures the unique ridge patterns of all ten fingers by rolling each finger onto the card in a specific manner.

When fingerprinting, the two types correspond to different positions of the fingers—commonly referred to as the plain and rolled impressions. This dual approach ensures the collection of both clear, complete impressions and the essential ridge patterns necessary for identification purposes.

Options that suggest only one type of fingerprint imply a limited understanding of the process, while the choices indicating three or four types would inaccurately represent the established procedures used in law enforcement settings. Thus, the answer reflects the standard practice in forensic fingerprinting, which is to roll two types of fingerprints—those from both hands.