The Asia Pacific Economic Cooperation (APEC) forum of 2001 was held in the city of Shanghai, China, which makes option 4 the correct answer. This forum promotes free trade and economic cooperation throughout the Asia-Pacific region.

Now, going through each option:

Option 1: Bangkok is incorrect because the APEC forum meeting in 2001 was not held in Bangkok, Thailand.

Option 2: Hong Kong is likewise incorrect. While Hong Kong is a member of APEC, it did not host the 2001 forum.

Option 3: Jakarta also did not host the forum in 2001. It belongs to Indonesia which is a member of APEC, but the meeting did not take place there.

Option 4: Shanghai is the correct answer. This city in China served as the hosting place for the APEC forum meeting in 2001.

So, in the mentioned year the meeting happened in Shanghai, making option 4 the correct answer.