What is accomplished by the code below?

A business user wants to add a link to a content page from within the body of another content asset. The target content asset ID is: terms-and-conditions.
Which link function generates the correct link?

Given the following ISML example, how should a developer reference the product object in the current iteration of the basket?
<isloop items ="${pdict.Basket.products}" var="product" status= "loopstatus">
...
</isloop>

A Digital Developer needs to add a new form to the shopping cart page to allow customers to enter their rewards pass ID. There is already an existing Cart.js controller that handles processing of the other cart forms. In addition, a form field node is in the form XML and the necessary form input is present in the ISML template.
The code below is the submit button for the ISML markup.

What additional steps must occur before the Digital Developer can begin writing the processing code for this request?

A Digital Developer added a file named MyBusinessController.js in the cartridge named app_project. The project design calls for this new file to override MyBusinessController.js in client_project. The client_project cartridge contains other necessary functionality. Additional functionality is also included in the storefront_core and storefront_controllers cartridges.
Which cartridge path meets the project requirements?