Final answer:
Option B is the best revision that uses subordinating conjunctions to clarify the meaning of the passage.
Step-by-step explanation:
The best revision that uses subordinating conjunctions to clarify the meaning of the passage is option B: The ship's crew had been at sea for many months when the ship was wrecked in a bad storm. Many of the crew washed up on a deserted island, where they drank from coconuts and fished for food before a passing ship rescued them.