Which of the following parts of our body help us in movement?
(i) Bones
(ii) Skin
(iii) Muscles
(iv) Organs
Choose the correct answer from the option below.

Options

A. (i) and (iii)
B. (ii) and (iv)
C. (i) and (iv)
D. (iii) and (ii)

Answer

To answer the question "Which of the following parts of our body help us in movement?" we need to analyze each option provided:

1. **Bones**:
- Bones form the structural framework of our body, known as the skeleton. They provide strength and support. However, bones alone do not allow for movement; they need to be connected to muscles. The joints between bones allow for movement when muscles contract and relax. Therefore, bones do play a role in movement, but they work in conjunction with muscles.

2. **Skin**:
- The skin is the outermost protective layer of our body. Its main function is to protect the body from germs and foreign particles. Skin does not aid in movement, so it is not a correct answer.

3. **Muscles**:
- Muscles are crucial for movement. They wrap around the bones and can contract and relax, enabling movement. For example, in humans, muscles work with bones to allow us to move our limbs. In other organisms, like earthworms, muscles also facilitate movement without bones. Thus, muscles are essential for movement.

4. **Organs**:
- Organs are internal structures such as the liver and kidneys. They perform various functions necessary for survival but do not contribute to movement. Therefore, organs do not help in movement.

Based on this analysis, the parts of the body that help us in movement are:

- **Bones (i)**
- **Muscles (iii)**

Thus, the correct answer is **(i) Bones and (iii) Muscles**.

### Step-by-Step Solution:
1. Identify the parts of the body listed in the question: Bones, Skin, Muscles, Organs.
2. Analyze the function of Bones: They provide structure and support but need muscles to facilitate movement.
3. Analyze the function of Skin: Its primary role is protection, not movement.
4. Analyze the function of Muscles: They are essential for movement as they contract and relax to move the bones.
5. Analyze the function of Organs: They perform internal functions and do not aid in movement.
6. Conclude that Bones and Muscles are the parts that help in movement.