What does the matrix of a friction ridge print consist of?

The matrix of a friction ridge print is a complex combination of substances that are deposited when a finger comes into contact with a surface. It consists not just of sweat, but also includes oils, grease, and various foreign materials such as dirt or debris from the skin or the environment. This combination creates the unique patterns we recognize as fingerprints.

Sweat from the eccrine glands contributes to the moisture in the print, while sebaceous glands produce oils and fats. When a finger touches a surface, these elements mix, leading to an impression that varies in both composition and structure depending on numerous factors like the individual's skin condition and the environment. Thus, the matrix encapsulates the idea that various components, including sweat and other substances, work together to form the complete fingerprint impression, making option C the most accurate representation of what constitutes the matrix of a friction ridge print.