Concept:
Social inequality refers to unequal distribution of resources, opportunities, and privileges in society.
Step 1:
Social resources include wealth, education, power, health care, and opportunities.
Step 2:
When some individuals or groups receive more resources and opportunities than others, inequality exists.
Step 3:
The sociological term used for unequal access to social resources is social inequality.
Step 4:
• Presumption and assumption are unrelated concepts.
• Equality means equal access and opportunities.
Step 5:
Therefore, the correct answer is Inequality.
\[
\boxed{\text{(3) Inequality}}
\]