While writing an Apex class that creates Accounts, a developer wants to make sure that all required fields are handled properly.
Which approach should the developer use to be sure that the Apex class works correctly?

Universal Containers stores the availability date on each Line Item of an Order and Orders are only shipped when all of the Line Items are available. Which method should be used to calculate the estimated ship date for an Order?

A team of many developers work in their own individual orgs that have the same configuration at the production org. Which type of org is best suited for this scenario?

Management asked for opportunities to be automatically created for accounts with annual revenue greater than $1,000,000. A developer created the following trigger on the Account object to satisfy this requirement.

Users are able to update the account records via the UI and can see an opportunity created for high annual revenue accounts. However, when the administrator tries to upload a list of 179 accounts using Data Loader, It fails with system. Exception errors.
Which two actions should the developer take to fix the code segment shown above?
Choose 2 answers

Which scenario is valid for execution by unit tests?