TOEFL Reading

❓ Question According to the passage, why is bioluminescence particularly prevalent in the deep sea?

A. A. Because the lack of sunlight makes light production essential for vision.
B. B. Because it provides a means of communication that is more efficient than sound.
C. C. Because it serves multiple critical functions such as predation, defense, and communication in the dark environment.
D. D. Because deep-sea organisms have evolved to produce light as a byproduct of their metabolism.

C. Because it serves multiple critical functions such as predation, defense, and communication in the dark environment.