You have to install a new module on the production environment. All the module is adding a new product attribute. You enabled maintenance mode, copied the module code, run bin/magento setup:upgrade and disabled maintenance mode.
What two risks does this process pose? (Choose two.)

Which entity in Magento supports scoped attributes?

While reviewing a layout file named sales_order_view.xml you notice the element
<update handle="customer_account"/>
What is the purpose of this element?

A module MyModule needs to send notifications to customers only when the account was modified from a mobile app using the REST web APIs.
You decided to implement an observer for customer_save_after_data_object event.
In which file do you declare the observer?

You need to add a new text attribute to all products in the Magento store. When this attribute is displayed on the product page, its values must be different depending on the selected language.
Keeping simplicity in mind, how do you add this attribute?