Social justice refers to the concept of equality in opportunity, treatment, and access to resources for all individuals in a society, regardless of their caste, creed, colour, or sex. It aims to eliminate all forms of discrimination and create a fair and just society. Option 1, which suggests that everyone should have the same economic rights, is not a complete definition of social justice as it does not address other aspects of equality. Option 2, which states that everyone should have the same political rights, is also not a complete definition as social justice encompasses more than just political equality. Option 4, which mentions the right to freedom of religion, is not directly related to social justice, as it does not cover all forms of discrimination. Therefore, option 3 is the correct definition of social justice.