There is a business requirement thata custom controller in app_custom_my_cartridge invokes the calculateTax(basket) function of...

To invoke the calculateTax(basket) function from a custom controller in app_custom_my_cartridge that is defined in the dw.order.calculateTax hook in app_storefront_base, the developer should implement Option A. This option correctly utilizes the dw.system.HookMgr.callHook method, specifying the hook identifier dw.order.calculateTax and passing the currentBasket as a parameter. This approach ensures that the custom controller can effectively call the existing logic defined in the base cartridge, leveraging Salesforce B2C Commerce's hook system to maintain clean and modular code architecture, facilitating code reuse and maintainability.