**Core Concept**
The question tests the candidate's knowledge of daily dietary recommendations, specifically the percentage of total calories that should come from **fats** and **essential fatty acids (EFAs)**. A balanced diet is crucial for maintaining optimal health, and understanding the role of fats and EFAs is key.

**Why the Correct Answer is Right**
The correct percentage of total calories from fats and EFAs is important for various bodily functions, including energy production, absorption of vitamins, and maintenance of cell membranes. The World Health Organization recommends that adults limit their fat intake to 20-35% of total energy intake.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not align with the recommended daily intake of fats and EFAs.
**Option B:** Similarly, this option does not match the recommended percentage.
**Option D:** This option also does not align with the dietary guidelines.

**Why Each Wrong Option is Incorrect (Continued)**
Due to the lack of specific details in options A, B, and D, it's not possible to provide detailed explanations for each.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that **essential fatty acids**, such as omega-3 and omega-6, cannot be synthesized by the body and must be obtained through diet.

**Correct Answer:** C. 20-35%