Final answer:
Facial recognition software uses biometric features such as the distance between the eyes, width of the nose, and length of the jawline to match an individual with photos in a database.
Step-by-step explanation:
Facial recognition software identifies individuals from a database of driver's license photos and arrest mug shots primarily by analyzing and comparing biometric features. The correct answer is B. The software compares features such as the distance between the eyes, width of the nose, and length of the jawline.
These are distinct and measurable aspects of a person's facial structure that can be detected and quantified by the software. While answer C mentions the speed at which facial recognition software can perform comparisons, it does not provide insight into the actual method of identification, making answer B the most accurate response.