Which two statements can a developer use to throw a custom exception of type MissingFieldValueException? Choose 2 answers.

What should a developer working in a sandbox use to exercise a new test Class before the developer deploys that test production?Choose 2 answers

An org has an existing Visual Flow that creates an Opportunity with an Update records element. A developer must update the Visual Flow also created a Contact and store the created Contact's ID on the Opportunity.

A developer wants to import 500 Opportunity records into a sandbox. Why should the developer choose to use data Loader instead of Data Import Wizard?

Which standard field needs to be populated when a developer inserts new Contact records programmatically?