Answer:
They determined the people on board had to leave in a hurry and were unable to return.
Step-by-step explanation:
The sailors from the Dei Gratia finally decided that the crew of the Mary Celeste must have left in a hurry and were unable to return.
This is because the Mary Celeste crew and passengers were all missing, but their clothes and personal effects were still onboard which indicates that they left in a hurry and were unable to return. The ship itself was still in pristine sailing condition.