The "Miyawaki method" is well known for the :

The Miyawaki method is a Japanese technique used to create dense, native "mini forests" in urban areas by planting saplings close together, resulting in self-sustaining ecosystems that grow ten times faster than traditional plantations. Option (a) is incorrect because the method prioritizes ecological restoration and biodiversity rather than commercial farming or economic crop production in arid regions. The core concept tested is urban afforestation and innovative nature-based solutions for climate change mitigation.