Which of the following is categorised as a soft commodity?

Soft commodities are generally agricultural or cultivated products, or those that are grown and harvested, rather than extracted from the ground. They often include food and fibre products and other renewable resources. Lumber fits this definition because it is produced from trees grown over time and then harvested and processed. Copper is a hard commodity because it is a mined metal. Oil and natural gas are also hard commodities, specifically energy commodities, because they are extracted. CISI-style questions commonly test the distinction between soft commodities and hard commodities, with soft commodities associated with agriculture and renewables and hard commodities associated with metals and energy. The classification matters because supply drivers differ: soft commodities are influenced by weather, planting cycles, disease, storage, and seasonality, while hard commodities are influenced by extraction capacity, reserves, geopolitics, and refinery or production constraints. Among the options provided, lumber is the only soft commodity.