बेल्जियम का कौन सा शहर पारंपरिक रूप से हीरे के व्यापार के लिए विश्व का सबसे बड़ा और सबसे महत्वपूर्ण केंद्र माना जाता है?

Consider the following statements regarding Quaternary Activities: 1. These activities involve the collection, production, and dissemination of information. 2. They are tied to resources, affected by the environment, or necessarily localized by the market. 3. These activities center on research and development. 4. Like some tertiary functions, quaternary activities cannot be outsourced. Select the correct answer using the codes given below:

Where are the world's major commercial fishing grounds predominantly located?