**Core Concept**
The question revolves around the concept of post-mortem changes in the body, specifically the effect of embalming on the color of the corpse. Embalming is a process of preserving a dead body, usually for burial or display. The goal of embalming is to prevent decay and maintain a presentable appearance.

**Why the Correct Answer is Right**
Embalming involves the use of chemicals that help to preserve the body and prevent decomposition. One of the key chemicals used in embalming is formaldehyde, which is a potent disinfectant and antiseptic. Formaldehyde helps to kill bacteria and other microorganisms that can cause decay and discoloration of the body. In the case of a body that has been embalmed, the formaldehyde will help to preserve the skin and underlying tissues, preventing the usual changes in color that occur after death. As a result, the body will typically retain its natural color, or may even appear slightly pinkish due to the presence of the embalming fluids.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because embalming does not typically cause the body to turn green. While some chemicals used in embalming may impart a yellowish or brownish hue to the skin, green discoloration is not a common result of the embalming process.
**Option B:** This option is incorrect because embalming does not typically cause the body to turn blue. While some medical conditions or injuries may cause the skin to appear blue or cyanotic, this is not a result of the embalming process.
**Option C:** This option is incorrect because embalming does not typically cause the body to turn black. While some bodies may appear dark or discolored due to environmental factors or pre-existing medical conditions, this is not a direct result of the embalming process.

**Clinical Pearl / High-Yield Fact**
It's worth noting that the color of the corpse after embalming can vary depending on the specific chemicals and techniques used, as well as the individual's underlying medical condition. However, in general, embalming will help to preserve the natural color of the body, or may even impart a slight pinkish hue due to the presence of the embalming fluids.

**Correct Answer:** **D**. The body will typically retain its natural color or may appear slightly pinkish after embalming.