Question

what provides the only flashes of natural light in the deep ocean?
a. underwater volcanoes
b. bioluminescent organisms
c. chemical reactions in the water
d. disruptions such as hurricanes

Explanation:

Bioluminescent organisms produce light via chemical reactions. In the deep ocean, where sunlight doesn't penetrate, these organisms (like certain fish, jellyfish) are the main source of natural light flashes. Underwater volcanoes (A) release heat and minerals but not light flashes as described. Chemical reactions in water (C) aren't the main source of such light. Disruptions like hurricanes (D) don't provide light in the deep ocean.

Answer:

B. bioluminescent organisms