A developer wrote a Visualforce page for Sales Reps to add products to an order. The page takes a URL query parameter, productFamily, which filters the product results. The test method for the filter behavior has an assertion failing due to an incorrect number of results. Why could the test be failing? Choose 2 answers

A company wants to implement a new call center process for handling customer service calls. It requires service reps to ask for the caller's account number before proceeding with the rest of their call script. Following best practices, what should a developer use to meet this requirement?

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 developer created and tested a Visualforce page in their developer sandbox, but now receives reports that users are encountering ViewState errors when using it in Production. What should the developer ensure to correct these errors?

A company notices that their unit tests in a test class with many methods to create many records for prerequisite reference data are slow.
What can a developer to do address the issue?