Concept:
Social movements are organized collective efforts by groups of people to promote or resist social change.
Step 1:
Social movements are formed around common goals and collective interests.
\[
\text{Shared objective is a feature}
\]
Step 2:
Social movements involve sustained and organized collective participation by members.
\[
\text{Sustained collective action is a feature}
\]
Step 3:
Most social movements aim to bring change in society, institutions, or policies.
\[
\text{Social change is a major feature}
\]
Step 4:
Self-orientation focuses on individual interest rather than collective social goals, so it is not a feature of social movements.
\[
\text{Self-orientation is incorrect}
\]
Step 5:
Therefore, the correct answer is Self-orientation.
\[
\boxed{\text{(3) Self-orientation}}
\]