A NewsletterSubscription custom object exists that has a key attribute named email of type String and the following script code.

However, the NewsletterSubscription custom object is not persisted. What is a possible reason?

A Digital Developer has created a new PaymentForm controller that requires communication with the server and must be made using the HTTPS protocol.
Which code sample should the Developer use to make sure that HTTPS is used?

A developer is asked to implement a simple call to an authentication - protected REST web service.
Which configuration is valid?

Universal Containers wants to change a content slot that is currently configured to display a content asset. Now they want the slot to display the top five selling boxes for the week.
Which two changes need to be made for this to occur? (Choose two.)

A merchant has a new requirement to accept American Express credit cards on its Storefront. A credit card payment method already exists.
Which step must a developer take in Business Manager to achieve this?