Final answer:
The debris was found on the surface of the Atlantic Ocean, believed to be from the lost ship. A search operation was launched but no scrap was found. Various speculations were made about the mysterious disappearance of the ship.
Step-by-step explanation:
The correct answer is option A: found, is believed, was lost, was launched, was found, encountered, were made. In the sentence, the debris was found floating on the surface of the Atlantic Ocean. It is believed to be of the ship that was lost in the ocean last month. A massive search operation was launched then but no scrap was found. The ship was encountered bad weather and disappeared. Various speculations were made about the mysterious disappearance of the ship.
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