Explanation:

All statements are correct.

• The Golden Crescent refers to a region in Southwest Asia that comprises Pakistan, Afghanistan, and Iran. These countries are geographically connected, forming a crescent-shaped area. 

• Afghanistan is known as the largest contributor to illicit opium production within the Golden Crescent region. It is a major producer of opium poppy, which is the primary source of heroin. 

• While Pakistan is part of the Golden Crescent and engages in opium production, its output is considerably lower compared to Afghanistan. Pakistan's opium production is relatively smaller in scale. 

• The Golden Triangle refers to a region in Southeast Asia composed of three neighboring countries: Laos, Thailand, and Myanmar. It is another significant area known for its illicit opium production and drug trafficking activities.

Hence option 4th is correct.