Answer: As Mark was about to throw away the old bottle, he saw that there was a piece of paper inside it. Without thinking twice, he quickly grabbed the bottle and carefully took out the piece of paper. To his surprise, there was a map drawn in the paper, marking a spot in the nearby forest.
Intrigued by the discovery, Mark decided to check it out. The next day, he drove to the forest and started hiking towards the marked spot. After hours of walking, he finally reached the spot, which turned out to be a hidden cave.
Inside the cave, Mark found a small box with a note attached to it. The note read, "Congratulations! You have found the treasure of the great explorer, John Blackwood." With trembling hands, Mark slowly opened the box, and inside it was a precious diamond.
Filled with excitement, Mark quickly made his way back home. As soon as he got there, he did some research and found out that John Blackwood was a famous explorer who went missing years ago while searching for the diamond.
Mark knew he had to make sure the diamond was in safe hands, so he donated it to a museum. From then on, Mark became known as the "treasure hunter" among his friends, and every time he saw an old bottle, he couldn't help but wonder if there was another hidden treasure waiting to be discovered.
Step-by-step explanation: