Concept:Plantation agriculture is a large-scale, organised farming system focused on producing cash crops for industrial use.
Explanation:In East Africa, plantation farming mainly grows tea, coffee, sisal, and sugarcane.
These crops are cultivated over vast estates with systematic management.
Because the farms are large and well-organised, they yield a continuous output across seasons.
This steady production feeds processing factories without interruption.
As a result, industries receive a constant and dependable flow of raw materials.
That is a major advantage because it makes industrial planning and export trade reliable.
The other listed points are either disadvantages or not core benefits.
High capital investment is more a requirement than a benefit.
Soil erosion is a possible negative effect.
Unemployment is not created by such labour-intensive farms.
Answer:C. provides regular supply of raw materials