What is the makeup of marine animals found in the habitat shown in the illustration?

Image showing upright mangrove trees with minimal stilt/prop roots showing. Water level is high.

The correct answer is option B) The hyphae, or feeding structures, reach deep into the wood to obtain nutrients.

The hyphae are the structures, which resembles the roots of the plants. The hyphae can penetrate the wood and reach deep inside the plant body, which help the hyphae in acquiring the nutrients from the plants. The fungus survive on the nutrition present in the plant. Hence, they are considered as  the consumers. None of the part of the fungi is responsible for making its own food.