The correct option is Tea.
Explanation
Plantation agriculture involves the commercial cultivation of a single crop on large estates, primarily for export. In Sri Lanka, the plantation sector is a legacy of the British colonial administration and remains a crucial part of the national economy.
Detailed Analysis
- Tea (Correct): Tea is the most significant plantation crop in Sri Lanka. Following the collapse of the coffee industry in the late 19th century due to fungal disease, British planters shifted to tea cultivation. Sri Lanka (formerly Ceylon) became one of the world's leading producers and exporters of tea, known globally as "Ceylon Tea." It is grown extensively in the central highlands.
- Coffee: Historically, coffee was the dominant plantation crop in Sri Lanka during the early British period. However, the industry was devastated by the "coffee rust" disease (Hemileia vastatrix) in the 1870s, leading to its replacement by tea. Therefore, it is not the crop most closely associated with the current plantation landscape.
- Soybean and Maize: While these crops are cultivated in Sri Lanka, they are primarily food crops or minor cash crops and do not constitute the backbone of the country's plantation agriculture sector in the same manner as tea, rubber, or coconut.
Key Takeaway: The Sri Lankan plantation economy is historically and economically defined by the shift from coffee to tea in the late 19th century, making tea the country's premier export crop.