Which of the following fields is a valid field that is extracted from business cards?

The correct answer, AddressStreet, is a valid field extracted from business cards because it represents the specific street address where a business or individual is located. Business cards typically include various types of contact information, and street addresses are a common component used for identifying where to reach a person or organization. The business card's design often reflects the need for easy identification of location data.

In comparison, while MiddleName may seem plausible, it is not a standard field extracted from business cards since most business cards do not traditionally include a middle name; they often feature only a first and last name. CityAddress, on the other hand, is not a recognized standard field name. While city names can certainly be a part of an address, the terminology doesn't align with conventional fields used in data extraction, making AddressStreet the most appropriate and accurate choice in this context.