Hey there!
When you see or hear the word “accustomed” think of the person/speaker or question telling that it is another name for “Be prepared of something” or just simply think of the word “adaption”.
Another word for “adaption” or “adapt” is “habitation” aka “habitat”
Based on that information I gathered for you, the answer is “in the habit for” (Option C.) because it’s talking about the word “habitat”
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
