A developer created a visualforce page using a custom controller that calls an apex helper class. A method in the helper class hits a governor limit. what is the result of the transaction?

Given the following trigger implementation:
trigger leadTrigger on Lead (before update){
final ID BUSINESS_RECORDTYPEID = '012500000009Qad';
for(Lead thisLead : Trigger.new){
if(thisLead.Company != null && thisLead.RecordTypeId != BUSINESS_RECORDTYPEID){ thisLead.RecordTypeId = BUSINESS_RECORDTYPEID;
}
}
}
The developer receives deployment errors every time a deployment is attempted from Sandbox to Production.
What should the developer do to ensure a successful deployment?

Which type of controller should a developer use to include a list of related records for a Custom Object record on a Visualforce page without needing additional test coverage?

Where can a developer identify the time taken by each process in a transaction using Developer Console log inspector?

What are two considerations for deciding to use a roll-up summary field? Choose 2 answer's partner.