Choose the incorrect pair from the following with reference to the human ear.

Options

A. mulleus , incus and stapes - provides the bony framework of the ear
B. pinna - collects the vibrations in the air which produce sound
C. Eustachian tube - helps in equalising the pressures on either sides of the eardrum
D. macula and crista - responsible for the maintenance of the balance of the body and posture

Answer

To determine the incorrect pair with reference to the human ear, let's analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Option A: Malleus, Incus, and Stapes provide the bony framework of the ear.**
- The malleus, incus, and stapes are indeed known as the ear ossicles. They are located in the middle ear and play a crucial role in transmitting sound vibrations from the eardrum to the inner ear. However, they do not provide the overall bony framework of the ear; that is primarily the function of the temporal bone. Therefore, this statement is incorrect.

2. **Option B: Pinna collects the vibration in the air which produce sound.**
- The pinna (or auricle) is the outer part of the ear that collects sound waves from the environment and directs them into the ear canal. This statement is correct.

3. **Option C: Eustachian tube helps in equalizing the pressures on either side of the eardrum.**
- The Eustachian tube connects the middle ear to the nasopharynx and helps equalize air pressure on both sides of the eardrum. This statement is also correct.

4. **Option D: Macula and crista responsible for the maintenance of the balance of the body and posture.**
- The macula and crista are sensory structures located in the vestibular system of the inner ear. They are involved in maintaining balance and posture by detecting changes in head position and movement. This statement is correct.

### Conclusion:
Based on the analysis, the incorrect pair is **Option A: Malleus, Incus, and Stapes provide the bony framework of the ear.**

### Final Answer:
The answer is **Option A**.

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