REST uses __________.

Given the following containment hierarchy:

What is the correct way to communicate the new value of a property named ''passthrough'' to my-parent component if the property is defined within my-child-component?
A)

B)

C)

D)

A company has an Apex process that makes multiple extensive database operations and web service callouts. The database processes and web services can take a long time to run and must be run sequentially.
How should the developer write this Apex code without running into running into governor limits and system limitations?

What is the most efficient way in Visualforce to show information based on data filters defined by an end-user for a large volume of data?

A developer i$ tasked Dy Unversai Containers to build out a system to track the container repair process.
Containers should be tracked as they move through the repair process, starting when a customer reports an issue and ending when the container is returned to the customer.
Which solution meets these business requirements while following best practices?