Option C implements abefore inserttrigger to prevent the creation ofRequest__crecords when specific conditions exist. It uses theaddErrormethod to display an error to users.
Example of correct logic:
trigger RequestTrigger on Request__c (before insert) {
for (Request__c req : Trigger.new) {
if (!RequestLogic.isValid(req)) {
req.addError('Your request cannot be created at this time.');
}
}
}
:Trigger Events in Apex