The best explanation for plantation agriculture among the provided options is Option A: "Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop."
This option accurately describes plantation farming, which is characterized by a high level of labor and capital investment, often involving large-scale production of single cash crops (like sugar, coffee, or rubber) on large tracts of land. These plantations typically require significant management, costs, and resources to maintain, reflecting the intensive nature of this agricultural practice.