Why should a Digital Developer use ProductSearchModel.getProducts() instead of Category.getOnlineProducts()to access products?

A Digital Developer extends a system object, Product, and adds a Boolean attribute, "sellable," to it.
Assuming "prod" is the variable name handling the product, what code can the Developer use to access it?

A developer is given the requirement to add a step to the existing business logic of the registration process. How should the developer modify the route that handles the customer registration?

The following sample code is NOT providing the desired results. The Digital Developer needs to add an entry to the logs to debug the problem.

Which statement correctly adds a log entry?

The following sample code is NOT providing the desired results. The Digital Developer needs to add an entry to the logs to debug the problem.

Which statement correctly adds a log entry?