4. Which of the following is an intensive agriculture practice that specializes in a single tropical or sub- tropical crop for global rather than local markets? a. Nomadic herding b. Shifting cultivation c. Market gardening d. Plantation agriculture e. Grain farming

The correct answer is: d. Plantation agriculture **Explanation:** - **Nomadic herding** involves moving livestock to find fresh pastures and is not focused on a single crop. - **Shifting cultivation** is a form of subsistence agriculture where land is cleared for farming and then left to regenerate, typically involving multiple crops. - **Market gardening** refers to the small-scale production of fruits, vegetables, and flowers for local markets, not specifically for global markets. - **Plantation agriculture** specializes in the cultivation of a single crop (such as coffee, sugar, or rubber) and is often geared towards global markets. - **Grain farming** typically involves the cultivation of various grains and is not limited to a single crop for global markets. Thus, plantation agriculture is the intensive practice that fits the description provided.