Refer to the given paragraph.
(i) does not have bones. It has (ii) which help to extend and shorten the body. It has a large number of (iii) projecting out from underside of the body which help to get a good grip on the ground.
Select the correct option for (i), (ii) and (iii) respectively.

Options

A. Snail, setae, muscular foot
B. Earthworm, muscles, setae
C. Earthworm, muscular foot, scales
D. Snake, muscles, setae

Answer

To solve the question, we need to fill in the blanks (i), (ii), and (iii) in the given paragraph with the correct terms based on the characteristics of an earthworm.

1. **Identify the organism**: The first blank (i) refers to an organism that does not have bones. The earthworm is a well-known example of such an organism, as it has a soft body and lacks a bony skeleton. Therefore, we fill in (i) with "earthworm".

2. **Identify the structure that allows movement**: The second blank (ii) refers to the structures that help the organism extend and shorten its body. In the case of the earthworm, these structures are muscles. Muscles allow the earthworm to contract and relax, facilitating movement. Thus, we fill in (ii) with "muscles".

3. **Identify the projections for grip**: The third blank (iii) describes the projections that help the organism grip the ground. Earthworms have tiny bristle-like structures called "setae" that project from their bodies and help them anchor themselves to the soil as they move. Therefore, we fill in (iii) with "setae".

Putting it all together, the completed paragraph reads:
(i) earthworm, (ii) muscles, (iii) setae.

### Final Answer:
(i) earthworm, (ii) muscles, (iii) setae.