Understanding the Options
The options presented are different types of clothing items:
- a) Turban
- b) Skirt
- c) Sari
- d) Frock

Identifying the Differences
When analyzing the clothing items, we can categorize them based on their style and cultural significance:
- Turban:
- A headwear commonly associated with various cultures, particularly in South Asia and the Middle East.
- Primarily serves a functional or cultural role rather than being a garment worn on the body.
- Skirt:
- A lower body garment that can be worn by all genders, typically made of fabric and designed to cover the waist and legs.
- Common in many cultures, often seen as a fashion item.
- Sari:
- A traditional garment for women from the Indian subcontinent, consisting of a long piece of cloth draped elegantly around the body.
- Worn for various occasions, signifying cultural identity.
- Frock:
- A dress that is usually worn by girls or women, covering the body from the shoulders to the waist and often extending down to the legs.
- A common item in Western fashion.

Conclusion: The Odd One Out
The reason the correct answer is option 'A' (Turban) is:
- The turban is a head accessory, while the skirt, sari, and frock are all garments worn on the body.
- This distinction makes the turban fundamentally different from the other options, which are all types of clothing that cover the torso and lower body.