Final answer:
To remove mercury pigment from tissue, the appropriate method is through the use of a chelating agent. Chelation therapy, when used promptly in cases of acute exposure, can improve outcomes but should be approached with caution as it could deplete essential metals. The option (B) is correct.
Step-by-step explanation:
To remove mercury pigment from tissue, the correct method would be to treat it with a chelating agent. Washing with water is ineffective for mercury removal, and applying heat or exposure to UV light cannot safely clear mercury from tissues. In cases of acute mercury poisoning from inorganic mercury salts, chelation therapy using agents such as dimercaptosuccinic acid (DMSA) or dimercaptopropane sulfonate (DMPS) can significantly improve outcomes if administered promptly after exposure.
For long-term exposure, however, the benefits of chelation therapy are less clear. Chelation involves the use of substances that bind to heavy metals in the body, allowing them to be excreted. This method should be used carefully as it can also remove essential metals like iron and zinc from the body, thereby potentially leading to new health issues. Therefore, option (B) is correct.