On 1 January 1997, who initiated an inquiry into how the UN should be reformed?

Kofi Annan

The correct answer is Option 3 - Kofi Annan

In view of these growing demands for the restructuring of the UN, on 1 January 1997, the UN Secretary-General Kofi Annan initiated an inquiry into how the UN should be reformed.

More about Kofi Annan:

Kofi A. Annan (1997-2006) Ghana; UN official; created the Global Fund to fight AIDS, Tuberculosis and Malaria; declared the US-led invasion of Iraq as an illegal act; established the Peacebuilding Commission and the Human Rights Council in 2005; awarded the 2001 Nobel Peace Prize.