Universal Container wants Opportunities to no longer be editable when reaching the Clousd stage.
How should a develoiper accomplish this?

Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the Apex class, BodyFat, and its method, calculateBodyFat(). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizations outside the ISV's package namespace.
Which approach should a developer take to ensure calculateBodyFat() is accessible outside the package namespace?

A developer has two custom controller extensions where each has a save() method.
Which save() method will be called for the following Visualforce page?
<apex:page standardController ="Account", extensions="ExtensionA, ExtensionB">
<apex:commandButton action ="{!save}" value="Save"/>
</apex:page>

How many levels of child records can be returned in a single SOQL query from one parent object?

A developer has to identify a method in en Apex class that performs resource intensive actions in memory by iterating over the result set of a SOQL statement on the account. The method also performs a SOQL statement to save the changes to the database.
Which two techniques should the developer implement as a best practice to ensure transaction control and avoid exceeding governor limits?
Choose 2 answers