Answer: Option A. -> Wool
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A, B, and C

Fibres we obtain from nature (plants and animals) are called as natural fibres. Wool is obtained from hair of animals like sheep, goat, yak, etc; silk from cocoon of silkworm and cotton from fruits of cotton plant. Hence, wool, cotton and silk are natural fibres. Nylon is prepared from chemicals and hence is a man-made fibre.

Answer: Option B. -> Jute fibre is obtained from sheep.
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B and C
Fibres are thread-like structures and strands of fibres combine to form the fabric.
Jute fibre is obtained from the stem of the jute plant. Moreover, wool is obtained from sheep and silk fibre is obtained from silkworms.
Jute, wool and silk are natural fibres as they are either produced from plants or animals.

Answer: Option B. -> Jute fibre is obtained from sheep.
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Clothes are important because they guard our bodies against the external environment like insect bites, and they make us look good.

Answer: Option B. -> Jute fibre is obtained from sheep.
:

Stem of the jute plant is used for getting jute fibre.

Answer: Option B. -> Jute fibre is obtained from sheep.
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Definition: 1 Mark
Production: 1 Mark
Examples: 1 Mark
A yarn is a long thread of interlocked fibres. 
The fibres are first drawn out from their source and then twisted into yarn. This process is called spinning.
The devices used in spinning are takli and charkha.

Answer: Option B. -> Jute fibre is obtained from sheep.
:

Each solution : 1 Mark
a) Cotton fibre is obtained from the fruit of the cotton plant.

b) Jute fibre is obtained from the stem of the plant.

c) Nylon, polyester, acrylic fibres are obtained from chemicals.

Answer: Option B. -> Jute fibre is obtained from sheep.
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Types: 1 Mark each
Classification: 1 Mark
Natural fibres are of two types based on where they are obtained from - Animal fibres and Plant fibres.
Plant fibres include all fibres we obtain from plants. Examples include jute, linen, etc
Animal fibres are the fibres that we obtain from animals, like fur.

$\begin{array}{ccc}\text{S. No}& \text{Fibres}& \text{Types}\\ \text{1}& \text{Cotton}& \text{Plant fibre}\\ \text{2}& \text{Wool}& \text{Animal fibre}\\ \text{3}& \text{Silk}& \text{Animal fibre}\end{array}$

Answer: Option B. -> Jute fibre is obtained from sheep.
:

Fibres can be classified into two based on the source from which we obtain it - natural and synthetic fibres.
Natural fibres are those that we get from plant or animal sources. Examples - cotton, jute, silk, wool, etc
Synthetic fibres are man-made fibres, and is not obtained from plant or animal sources. Examples - nylon, polyester, etc

Answer: Option B. -> Jute fibre is obtained from sheep.
:

Fibre: 1 Mark
Fabric: 1 Mark
Fibres are thin strands of materials that we obtain either from natural or synthetic sources. 
Fabrics are pieces of cloth made of up multiple yarns, which in turn are made out of fibres.

Answer: Option B. -> Jute fibre is obtained from sheep.
:
History of clothing: 1 Mark each
Indian clothes: 1 Mark
1. In the beginning of civilisation, people used barks, leaves and animal fur as clothes. 
2. When people settled down as farmers, they used woven vines and animal fleece as clothes.
3. In the next stage, flax and cotton were woven into clothes. In those times, people just draped the fabric to cover themselves.
4. People started wearing stitched clothes only after the needle was invented.
Some signature clothing items of India include turbans, saris, and dhotis.