Explanation:

The defining features of a dominant caste generally include:

- Numerical strength: The caste should have a large population within the region. This ensures support in both social and political arenas.

- High economic status: Financial strength allows the caste to wield economic power and influence in society.

- High political status: Dominant castes often have significant influence over local or regional politics, controlling political power structures.

- Highest ritual status: While significant, it's often not the defining feature of a dominant caste, compared to the combined impact of numerical, economic, and political strength.

With these points:

- Option 1 (1, 2, and 3): Includes ritual status, which isn't a defining feature.

- Option 2 (1, 2, and 4): Misses economic status for political.

- Option 3 (1, 3, and 4): Correctly highlights numerical, economic, and political strengths.

- Option 4 (2, 3, and 4): Lacks numerical strength.