Answer:
B, "just about plumb out of fuel".
Step-by-step explanation:
I'm assuming this book is Team Moon: How 40,000 people landed Apollo 11 on the moon by Catherine Thimmesh.
This book describes events that are stated as part of your question. All 4 of those options are technically correct, there's only 1 that is absolutely correct.
The first option describes how the problem was; the third option describes how the trip/landing was planned out; and the fourth option states how far away the ship was from the moon.
The question is asking for which option BEST IDENTIFIES the problem. Not how it was, not how it was planned, and not some facts about how far away the ship was.
Therefore, option B (Just about plumb out of fuel) is the best option.
Best of luck :3