What is the result when a Visualforce page calls an Apex controller, which calls another Apex class, which then results in hitting a governor limit?

A developer is asked to create a Visualforce page for Opportunities that allows users to save or merge the current record.
Which approach should the developer to meet this requirement?

Universal Containers wants Opportunities to no longer be editable when reaching the Closed/Won stage.
How should a developer accomplish this?

The Salesforce Administrator created a custom picklist field, Account_status_c, on the a Account object. This picklist has possible values of Inactive'' and Active?
As part of a new business process, management wants to ensure an opportunity record is created only for Accounts marked as "Active". A developer is asked to implement this business requirement.
Which two automation tools should be used to fulfill the business need?
Choose 2 answers

A developer tasked with creating a schema to track Movies, Actors, and contracts. A single movie can have many contracts and a single actor can have many contracts. Each contract is owned and actively managed by a single user. Which schema should be created to enable user to easily manage the contract they own; without requiring access to the movie or the actor records?