code: def find_frequent_items(transactions, threshold):
          
          items = {}
  
          for transaction in transactions:
              for item in transaction:
                  if item in items:
                      items[item] += 1
                  else:
                      items[item] = 1
  
          for key in list(items.keys()):
              if items[key] < threshold:
                  del items[key]
  
          return items
docs: Create a dictionary of items with occurrences above the threshold.