Which approach should a developer take to automatically add a "Maintenance Plan" to each Opportunity that includes an "Annual Subscription" when an opportunity is closed?

Considering the following code snippet:

When the code executes a DML exception is thrown.
How should the developer modify the code to ensure exceptions are handled gracefully?

A developer uses a loop to check each Contact in a list.
When a Contact with the Title of "Boss" is found, the Apex method should jump to the first line of code outside of the for loop.
Which Apex solution will let the developer implement this requirement?

A developer wants to store a description of a product that can be entered on separate lines by a user during product setup and later displayed on a Visualforce page for shoppers. Which field type should the developer choose to ensure that the description will be searchable in the custom Apex SOQL queries that are written?

Universal Containers wants Opportunities to be locked from editing when reaching the Closed/Won stage.
Which two strategies should a developer use to accomplish this? Choose 2 answers