Which Business Manager module should a Developer use to disable Apple Pay for Spain?

To disable Apple Pay specifically for Spain, the appropriate Business Manager module to use is the Merchant Tools > Ordering > Payment Methods. This module is responsible for managing all payment methods available on the site, including enabling or disabling specific payment options like Apple Pay for particular geographical regions or sites.

When a developer navigates to the Payment Methods section, they can view all the payment options that the e-commerce site supports. This section allows for fine-tuning payment methods based on various criteria, including countries or regions where certain payment methods should or should not be available.

The other modules mentioned serve different functions. For instance, the Site Preferences > Apple Pay is primarily concerned with general settings for Apple Pay, but it does not provide the specific capability to enable or disable it by region. Similarly, the Ordering > Payment Processors module focuses on managing the underlying payment processing technology and integration rather than the availability of payment methods in specific locations. Lastly, Site Preferences > Payment Types deals with high-level settings and general payment types, rather than the granularity required for disabling Apple Pay specifically in Spain. Hence, the chosen module provides the necessary functionality aligned with the task of managing payment methods on a per-region basis.