Mohr's circle is a graphical method used to determine the stress components acting on an inclined surface. It provides a visual representation of the stress state at a point in a material under load. By analyzing the circle, we can determine various stress parameters, including principal stress, normal stress, tangential stress, and maximum shear stress. Let's explore each of these stress components in detail:

1. Principal Stress:
- Principal stresses are the maximum and minimum values of stress acting on a point in a material.
- Mohr's circle allows us to determine the principal stresses by locating the points on the circle corresponding to the maximum and minimum stress values.
- The radii of the circle represent the magnitudes of the principal stresses.

2. Normal Stress:
- Normal stress refers to the stress component acting perpendicular to a surface.
- Mohr's circle provides a way to determine the normal stress acting on an inclined surface.
- By drawing a line tangent to the circle at a particular point, we can determine the normal stress on the corresponding plane.

3. Tangential Stress:
- Tangential stress, also known as shear stress, refers to the stress component acting parallel to a surface.
- Mohr's circle enables us to determine the tangential stress acting on an inclined surface.
- By drawing a line perpendicular to the radius passing through a particular point on the circle, we can determine the tangential stress on the corresponding plane.

4. Maximum Shear Stress:
- Maximum shear stress represents the maximum difference between the principal stresses acting on a point.
- Mohr's circle allows us to determine the maximum shear stress by measuring the diameter of the circle.
- The length of the diameter is equal to twice the maximum shear stress.

In conclusion, Mohr's circle provides a comprehensive analysis of the stress state at a point in a material. It allows us to determine the principal stress, normal stress, tangential stress, and maximum shear stress on an inclined surface. Hence, the correct answer is option 'D' - A, B, C, and D.