triggers - System.LimitException: SOQL クエリが多すぎます: 101 データローダの問題

Question

8,000 レコードを読み込もうとしているときにデータローダに問題があり、次のトリガが発生して System.LimitException: Too many SOQL queries: 101 because of this issue というエラーが発生します。

trigger BeforeTaskTrigger on Task (after insert, after update) {
    for(Task s : Trigger.new)
    {

        if ((s.Type == 'QRC')&&(s.Status=='Completed')) {
                BusinessLogic.processUpdateInsertTask(s);
    }
}
}


public static void processUpdateInsertTask (Task s){
         List<Task> itemList = [select Id, Type, Status, ActivityDate, OwnerId from Task where accountId = :s.AccountId and status = 'Completed' and Type ='QRC' Order By ActivityDate Desc ];
     List<Event> eventList = [select Id, Type, Status__c, ActivityDate, OwnerId, endDateTime from Event where accountId = :s.AccountId and Status__c = 'Completed' and Type ='QRC' Order By endDateTime Desc ];

        List<Account> accountData = [Select Id, Last_QRC_Date__c, Last_QRC_FA__c from Account where Id = :s.AccountId];
        if ((accountData!=null)&&(accountData.size()>0)){
            Date eventDate;
            if (eventList != null && eventList.size()>0){
         eventDate = date.newinstance(eventList.get(0).endDateTime.year(), eventList.get(0).endDateTime.month(), eventList.get(0).endDateTime.day());
        }
        if ((itemList != null)&&(itemlist.size()>0)&&(eventList!=null)&&(eventList.size()>0)){

        if (itemList.get(0).ActivityDate >= eventDate){
                accountData.get(0).Last_QRC_Date__c = itemList.get(0).ActivityDate;
                accountData.get(0).Last_QRC_FA__c = itemList.get(0).OwnerId;
                                update accountData;

        }
      else {
                accountData.get(0).Last_QRC_Date__c = eventDate;
                accountData.get(0).Last_QRC_FA__c = eventList.get(0).OwnerId;
                                update accountData;

      }
     }
     else if ((itemList != null)&&(itemlist.size()>0)){
                   processTaskSpecialCases(accountData, itemList);

     }
     else if ((eventList!=null)&&(eventList.size()>0)){
            processEventSpecialCases(accountData, eventDate, eventList);


       }
          else {
            processDeletionCases (accountData);

      }


      }
  }

SOQL クエリをより効率的に言い換えるのを手伝っていただければ幸いです。