Answer:
update the customer regularly and keep the customer informed of any further delay.
Explanation:
Since in the given situation it is mentioned that tom received the order of 25 personal computers that should be delivered in two days but at the same time he know there is delay in shipment as there is bulk order so in order to maintain the trust he has the responsibility to update the customer on regularly basis and if there is any further delay so the same should be informed to the customer as the customer has also the right to know for the same.
Therefore the above statement should be the answer