Explanation:

Mesomorph is the personality type that is described as noisy, callous, and fond of physical activity. Let's understand why Mesomorph fits this description.

Mesomorph:
- Mesomorph is one of the three constitutional types of body structure, along with endomorph and ectomorph.
- Individuals who are mesomorphs are typically characterized by a muscular and athletic build.
- They tend to have a naturally low body fat percentage and well-defined muscles.
- Mesomorphs are known for their strength and physical prowess.
- This body type is often associated with traits such as being energetic, competitive, and assertive.

Noisy:
- Mesomorphs are often described as noisy because they tend to be outgoing and assertive.
- They are not afraid to speak their mind and express themselves loudly.
- Their confident and extroverted nature often leads them to be more vocal and expressive in social situations.

Callous:
- Mesomorphs are characterized by their toughness and resilience.
- They are less likely to be easily affected emotionally by others and may appear callous or indifferent.
- This trait can be beneficial in certain situations where a tough and resilient attitude is required.

Fond of Physical Activity:
- Mesomorphs have a natural predisposition towards physical activity.
- They have a well-developed musculature and are often adept at sports and physical tasks.
- They enjoy engaging in activities that require strength, endurance, and physical exertion.
- Mesomorphs often excel in sports and activities that demand physical prowess.

Conclusion:
In conclusion, the personality type that is described as noisy, callous, and fond of physical activity is the mesomorph. Mesomorphs are characterized by their muscular build, assertive nature, toughness, and love for physical activity.