An email marketing specialist is personalizing a welcome email and wants to ensure a graceful fallback for profiles that are missing a first name. Instead of "Hello ,", it should say "Hello Valued Customer,". The profile attribute is `person.name.firstName`.
How can this be achieved concisely in the Expression Editor?

A content author is building an email in the Email Designer and needs to insert a personalized offer.
What is the essential prerequisite for an offer from the Offer Library to be available for selection within the email content?

An offer manager has just added a new "25% Off Welcome Discount" offer to the Offer Library. They need this offer to be included in an existing dynamic collection called "Welcome Offers," which is configured to automatically include all offers where the `category` attribute is "Welcome".
What is the next step the manager must take to get the new offer into the collection?

An email developer is building a data-driven email that must render a list of recommended products for a customer. The product data (name, image URL, price) is available as a `listString` (an array of objects) on the customer's profile.
When the developer tries to use the simple personalization picker to insert the product name, the field is disabled.
Why is this happening and what must be done?

A CRM manager wants to trigger a welcome journey the moment a customer's status is upgraded to "Loyalty Member" in their system. This status update populates a "New Loyalty Members" streaming segment in Adobe Experience Platform.
Which activity should be used to start this journey in real-time?