Based on the context provided, the following reasons could apply to why more resources were directed into agricultural production:
- Agricultural produce became more important for middle-class people.
- European and American styles changed and fur went out of fashion.
- Beaver were overtrapped and became too scarce to be profitable.
These responses indicate shifts in demand and supply dynamics that could compel a company like the Hudson's Bay Company (HBC) to transition towards agricultural production. The other two options suggest external pressures related to competition and business models but do not directly imply a necessity for increased agricultural resources.