 
<translate> Iji zaa ajụjụ a, chebara ihe a echiche: Akpa ink bụ ihe dị n'ahụ́ ọtụtụ nnụnụ ndị na-agba n'ala, bụ́ ndị e ji emepụta ink ha ji echebe onwe ha. Ya mere, azịza ya bụ imepụta ink cephalopod na-echebe onwe ya. <eng> To answer the question, consider the following: An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink. So, the answer is to produce the defensive cephalopod ink. 