Consider the above trigger intended to assign the Account to the manager of the Account''s region. Which two changes should a developer make in this trigger to adhere to best practices? Choose 2 answers

Example 1: AggregateResult[] groupedResults = [SELECT Campaignid, AVG(Amount) FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResuits) { System.debug ('Campaign ID' + ar.get('CampaignId'-); System.debug ('Average amount' + ar.get('exprd')); } Example 2: AggregateResult[] groupedResults = [SELECT Campaignid, AVG(Amount) theAverage FROM Opportunity GROUP BY Campaignid]; for (AggregateResult ar : groupedResuits) { System.debug(*Campaign ID' + ar.get('CampaignId')); System.debug ('Average amount' + ar.get('theAverage')); } Example 3: AggregateResult[] groupedResults = [SELECT CampaignId, AVG(Amount) FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResuits) System.debug(*Campaign ID' + ar.get('CampaignId')); System.debug('Average amount' + ar.get.AVG(-); } Example 4:AggregateResult[] groupedResults = [SELECT CampaigniId, AVG(Amount) theAverage FROM Opportunity GROUP BY Campaignid]; for (AggregateResult ar : groupedResults) { System.debug('Campaign ID' + ar.get('CampaignId')); System.debug ('Average amount' + ar.theAverage-; } Which two of the examples above have correct System.debug statements? Choose 2 answers

A company has reference data stored in multiple Custom Metadata records that represent default information for certain.
When a Contact is inserted, the default information should be set on the Contact from the Custom Metadata records .. Address information.
What is the optimal way to automate this?

Given a list of Opportunity records named opportunityList, which code snippet is best for querying all Contacts of the Opportunity's Account?
A)

B)

C)

D)

If you have a method "doStuff(List<sObject> records)", which is a valid call?