## Core Concept
The question revolves around the forensic technique used to enhance or re-visualize faded tattoos on a deceased individual for identification purposes. Tattoos can be crucial in identifying bodies when other forms of identification are not available. Various methods can be employed to enhance or reveal tattoos that have faded or are no longer clearly visible.

## Why the Correct Answer is Right
The correct answer, , involves the use of **infrared (IR) photography** or **reflectance spectroscopy** to enhance the visibility of the tattoo. Infrared photography works by capturing images using infrared light, which can penetrate deeper into the skin and reveal details not visible to the naked eye or under standard photographic conditions. This method exploits the differences in absorption and reflection of light by different skin pigments and structures, potentially making a faded tattoo more visible.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because **simple washing with soap and water** would not enhance a faded tattoo; it might only clean the surface but not improve visibility of the tattoo.
- **Option B:** This option is incorrect as **using a high-powered laser** might damage the skin and is not a standard method for enhancing visibility of tattoos for identification purposes.
- **Option D:** This option is incorrect because **applying a tattoo ink** would be invasive, potentially damaging, and not suitable for enhancing existing, albeit faded, tattoos.

## Clinical Pearl / High-Yield Fact
A valuable point to remember is that **infrared photography** is a non-invasive technique that can be particularly useful in forensic investigations for enhancing the visibility of bruises, wounds, and, as in this case, faded tattoos, without causing further damage to the body.

## Correct Answer Line
**Correct Answer: C. **