As You Are on the Way to Tahiti for a Vacation

Multiple Choice

As you are on the way to Tahiti for a vacation, your aeroplane crash lands on a previously undiscovered island. You soon find that the island is teeming with unfamiliar organisms, and you, as a student of biology, decide to survey them (with the aid of the Insta-Lab Portable Laboratory you brought along in your suitcase) . You select four organisms and observe them in detail, making the notations found in the figure.
-In which of the organisms listed would you search for collagen?

A) organism A
B) organism B
C) organism C
D) organism D