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 developer needs to update the package.json file so that it points to the hock file for a cartridge, using the hooks keyword. Which snippets work correctly when added to the file?:

A developer observed a specific issue in production, which they cannot reproduce in other environments. The developer wants to do a hot fix to one of the ISML pages, which uses <iscach> tag, to see if that resolves while issue. Which consideration must the developer keep in mind while deploying the hot fix in production?

Refer to the screen shot below:

Given a site called RefArch that has the settings shown, what must be done for RefArch to use the same customer list as RefArchGlobal?

The developer has been given the following business requirement:
The shipping method, "Free Standard Ground Shipping" has an exclusion for products with 'category equals or is child of electronics-televisions.' The marketing department has scheduled a sale offering a "Free Standard Ground Shipping" method for brand XyzTv televisions for the next 3 months.
What method accomplishes this while following best practices'