Universal Containers sells to three different types of organizations: Partner, Enterprise, and Small Business. Some of the information collected about each organization overlaps; however, there are also unique attributes to each type of organization that need to be tracked, some of which are required.
What solution meets these requirements?

What sandbox is used for virtually any development, testing, or training purpose?

Universal Containers uses a custom object called Candidates to track information about people who are being recruited for jobs within the company. When an employee refers a recruiting candidate, that employee should have access to the Candidate record; however, only HR users should be able to view, edit, and report on the Salary field.
What action should be recommended for controlling who can view the Salary field?

A sales manager would like to look at an Account record and view charts of all the related open opportunities, closed/won opportunities, and open cases.
How many report charts can be added to the Account page layout to meet this requirement?

You need to provide a way to invoke a custom report from the account detail page. The report should render values that are specific to the account in context.
What are the best options? (Choose two.)