Step 1: Read the figure:
The figure shows a fish that has caught a frog and is swallowing it head first. The frog is being eaten by the fish.
Step 2: Name the interaction:
When one organism (the predator) kills and feeds on another (the prey), the interaction is predation. The predator gains and the prey is harmed. So the answer is (C).
Step 3: Reject the others:
(A) Parasitism: the parasite lives on or in a host and feeds on it without killing it quickly. The fish is not living on the frog.
(B) Commensalism: one species gains and the other is neither helped nor harmed. The frog is harmed here.
(D) Amensalism: one species is harmed while the other is unaffected and gains nothing. The fish gains food, so this is not amensalism.
Final Answer:
Option (C), Predation.