The following passage is an excerpt from an essay about deep-sea exploration.
In 1977, oceanographers aboard the research vessel *Alvin* descended into the Pacific Ocean near the Galápagos Islands, expecting to find nothing more than a barren, frozen seafloor. To their astonishment, they discovered hydrothermal vents—fissures in the Earth's crust spewing superheated, mineral-rich water. Surrounding these vents were thriving ecosystems teeming with giant tube worms, blind crabs, and ghost-white fish. This discovery revolutionized biology, showing that life could flourish in the complete absence of sunlight by relying on chemosynthesis, a process in which microbes convert toxic chemicals into energy. [1]
The writer wants to add a concluding sentence at point [1] that summarizes the main idea of the paragraph and reinforces the revolutionary impact of the discovery on scientific understanding. Which choice best accomplishes this goal?
- AThe *Alvin* expedition cost millions of dollars, but the crew members were celebrated worldwide for their bravery and findings.
- BThese deep-sea systems rewrote the rules of biology, scientists now had to rethink where life could exist.
- Ultimately, the existence of these chemosynthetic communities shattered the long-held scientific consensus that all life on Earth depends on solar energy.Cevap
- DConsequently, the oceanographers who participated in the *Alvin* expedition discover that life could thrive in extreme conditions, which revolutionized modern biology.