Step 1: Understanding the Concept:
Plantation agriculture is a form of commercial farming where a single crop is grown on a large scale. These crops are primarily grown for profit.
Step 2: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{Tea: Grown in large estates, especially in Assam, West Bengal, and the Nilgiris. It is a classic example of a plantation crop.} \\ \bullet & \text{Rubber: Grown on large plantations, primarily in Kerala and Tamil Nadu.} \\ \bullet & \text{Sugarcane: Also grown on a large scale as a cash crop, fitting the description of a plantation crop.} \\ \end{array}\]
Other major plantation crops include coffee, cocoa, and bananas. Since Tea, Rubber, and Sugarcane all fit the definition, the correct answer is "All of these".
Step 3: Final Answer:
Tea, Rubber, and Sugarcane are all plantation crops.