Concept:Plantation agriculture has a major disadvantage: it encourages monoculture, or the growing of a single crop type over a large area.
Explanation:Plantation farms usually cultivate only one main crop, such as rubber, cocoa, or oil palm.
This practice is known as monoculture.
Monoculture reduces biodiversity because other plant species are cleared or crowded out.
It also depletes soil nutrients, since the same crop repeatedly uses the same minerals from the soil.
Pests and diseases spread rapidly in a single-crop farm, which increases the risk of heavy crop losses.
Therefore, among the options, encouraging monoculture is a major feature and problem of plantation agriculture.
Answer:B. Encourage monoculture