Explanation:

- The World Trade Organization (WTO) was established as a global international organization to oversee and regulate international trade.

- It officially came into existence on January 1, 1995.

- Option 1: 1990 – This date is too early; the WTO was not yet formed.

- Option 2: 2000 – This is incorrect; the organization was already active by this time.

- Option 3: 1995 – This is the correct date when the WTO was founded.

- Option 4: 2005 – This is too late; the WTO was established 10 years prior.