Where would a developer build a managed package?

A developer is migrating a Visualforce page into a Lightning web component.
The Visualforce page shows information about a single record. The developer decides to use Lightning Data Service to access record data.
Which security consideration should the developer be aware of?

Given the code below, which three statements can be used to create the controller variable? (Choose three.)

A developer at Universal Containers is tasked with implementing a new Salesforce application that must be able to be maintained completely by their company's Salesforce administrator.
Which three options should be considered for building out the business logic layer of the application? (Choose three.)

How can a developer set up a debug log on a specific user?