**Core Concept**
Lithium (Li) toxicity is a serious condition that occurs when lithium levels in the body exceed the therapeutic range. It can lead to various complications, including nephrotoxicity, neurotoxicity, and cardiac toxicity. The management of Li toxicity involves a combination of supportive care and specific treatments to reduce lithium levels.

**Why the Correct Answer is Right**
The correct approach to managing Li toxicity involves reducing lithium intake, administering activated charcoal, and using specific treatments like hemodialysis or hemofiltration to lower lithium levels. Hemodialysis is particularly effective in removing lithium from the body, especially in patients with severe toxicity or renal impairment. The goal is to reduce lithium levels to a safe range, usually below 1.5 mEq/L.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not provide a clear or effective treatment for Li toxicity. While some treatments may be mentioned, they are not specific or evidence-based.

**Option B:** This option is incorrect because it does not address the need for reducing lithium intake or administering activated charcoal in the treatment of Li toxicity.

**Option C:** This option is incorrect because it does not specify the type of treatment or the goal of treatment in managing Li toxicity.

**Clinical Pearl / High-Yield Fact**
A key fact to remember is that Li toxicity can be prevented by monitoring lithium levels regularly and adjusting the dose accordingly. It's also essential to be aware of the potential for Li toxicity in patients with renal impairment, as they are more susceptible to lithium accumulation.

**Correct Answer:** D.