Answer: B (Cohesive soil)
Step-by-step explanation:
Shoring is a method used to support the sides of an excavation or trench, typically used to prevent soil from collapsing and protect workers from falling. Shoring is typically used in cohesive soils, which are soils that have good internal strength and can hold together well. Cohesive soils include clay, silt, and clay loam.
Stable rock can be excavated without the need of shoring, A and D options are not suitable for shoring. In fine, sandy soil (C option) it's not likely to hold together well and the structure of shoring may not be effective.