**Core Concept**
Mitochondrial disorders are a group of diseases resulting from dysfunction of the mitochondrial respiratory chain, leading to impaired energy production in cells. This can affect various organs and tissues, depending on the specific mutation and its location within the mitochondrial genome.

**Why the Correct Answer is Right**
The treatment of mitochondrial disorders primarily focuses on addressing the underlying energy deficit. Coenzyme Q10 (CoQ10) is a key electron carrier in the mitochondrial respiratory chain and has been shown to improve energy production in cells with mitochondrial dysfunction. CoQ10 supplementation has been used to treat various mitochondrial disorders, including Kearns-Sayre syndrome and MELAS syndrome. The mechanism involves enhancing the electron transport chain and reducing oxidative stress.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not address the underlying energy deficit in mitochondrial disorders. Other treatments like antioxidants may have some benefit but are not the primary treatment.
**Option B:** This option is incorrect because it is not a commonly used treatment for mitochondrial disorders. Other treatments like vitamins and minerals may have some benefit but are not the primary treatment.

**Clinical Pearl / High-Yield Fact**
CoQ10 supplementation is a simple and effective treatment for mitochondrial disorders, improving energy production and reducing oxidative stress. It is essential to note that CoQ10 should be used under the guidance of a healthcare professional, as it may interact with other medications.

**Correct Answer: C. Coenzyme Q10 (CoQ10)**