In the given question, a statement of Assertion is followed by a statement of Reason. Mark the correct answer.

Assertion:  Certain organisations are known as Voluntary organisations or voluntary sector organisations because of the voluntary nature of their social work and economic work.
Reason: These voluntary organisations chose to remain outside party politics in the 1990s. They did not contest elections at the local or regional level nor did they support any one political party.

The Assertion is correct but the Reason is incorrect.

Certain organisations are known as Voluntary organisations or voluntary sector organisations because of the voluntary nature of their social work and economic work. These organisations are engaged in social work. These voluntary organisations chose to remain outside party politics in 1970s and 1980s.