A plant yielding both oil and fibre is

Options

A. Helianthus annuus
B. Brassica compestris
C. Cocos nucifera
D. Corchorus capsularis

Answer

To determine a plant that yields both oil and fiber, we can analyze the options provided:

1. **Helianthus annuus (Sunflower)**:
- This plant is known for producing sunflower oil, which is a type of vegetable oil used for cooking.
- However, it does not yield fiber.

2. **Brassica compestris (Mustard)**:
- This plant produces mustard oil, which is also used for cooking.
- Similar to sunflower, it does not provide fiber.

3. **Cocos nucifera (Coconut)**:
- The coconut plant yields coconut oil, which is used in cooking and various products.
- Additionally, it produces coir, which is a natural fiber obtained from the outer husk of the coconut.

4. **Coccus capsularis (Jute)**:
- Jute is primarily known for its fiber, which is used to make burlap and other products.
- It does not yield oil.

Based on this analysis, the plant that yields both oil and fiber is **Cocos nucifera (Coconut)**.

### Final Answer:
The plant yielding both oil and fiber is **Cocos nucifera (Coconut)**.