A bank customer can use either a plain vanilla option or an option contract with volumetric flexibility to reduce market risk and basis risk. Market risk involves the risk of changes in market prices, and basis risk involves the risk that the derivative's price does not move perfectly with the underlying asset. Operational risk, on the other hand, involves risks related to internal processes, systems, or external events, which are not typically managed through financial derivatives like options.
References
Verified from the discussion on managing market and basis risks with options in the book "How Finance Works".