Your story must begin with this sentence： As Mark was about to throw away the old bottle, he saw that there was a piece of paper inside it.
Your story must include：
- a messages or map
- a surprise

Explanation:

As Mark was about to throw away the old bottle, he saw that there was a piece of paper inside it.

It was a map, paper was scratched and it looked like it's been waiting for him to find it for years. Mark recognized his grandpa handwriting on the map. It said: " Dear grandson, I knew you will find this map. You are a curious explorer like me. So, your grandpa prepared a gift for your birthday. Follow this map and you will find something special! Good luck!" Mark was really excited and he couldn't wait to find what is X on the map. The map showed way from his grandpa old house to the X where was a cave. The cave Mark knew about of his grandpa stories really exists. From that story, Mark knew only the location of cave, but his grandpa never told him what is in that place. So, he decided to explore and follow the map. He prepared everything like he was going to find America again. But what he didn't know is that cave was pretty close to hill in his neighborhood. He quickly got there. He was standing in front of big rock, but there wasn't anything else, no cave, no grandpa's surprise? He sat on reddish rock and he was so disappointed... Suddenly he heard a noise. "What was that?!" he thought. He stood and looked behind him. There was a cave! Really, it was hidden because there were leaves and the cave was camoflaged. He quickly run in and he was so excited and proud. He saw one wodden chest. It was very old. He carefully opened it and stood there in shock... There were golden coins! He found the treasure! "Finally! Wow, real golden coins! I found the treasure!" he said. Then, he heard a laugh. "Dear Mark, those are chocolate coins, not golden. Hahahaha!" said male voice. Mark was so scared to turn around, but he felt someone's arm around him. That was his grandpa! He told him that and hug him. "Grandpa!!!" said Mark who was crying now. He knew only a little about his grandpa, his parents told him that he was just an old man trying to find treasure like little child. His grandpa told him that he was in other state for years. He was trying to find something special, but he realized that nothing is more special than family.

" Family is the biggest and the most worth treasure you can have, Mark" he said to Mark. They smiled at each other and walked out from cave with hands full with chocolate coins.

Nothing is more important than our family, some people don't see it, but the beauty and worth is just in front of their eyes- their family.

it would most likely be b. your welcome.