Marine animals find these to be a great source of food:\nOptions:\n- (A) grain\n- (B) nutrient\n- (C) sponges\n- (D) Energy.\n- (E) sea vents\n- (F) sodium\n- (G) Energy\n- (H) fungi
Think hard. Detailed solution:
(C)
Sponges are a source of food for many species of fish.

Fish and other marine animals abound here.

Sponges are a source of food for many marine animals.

.

The answer is (C)