Lena had always been fascinated by the old lighthouse that stood at the edge of Silver Bay. It was a towering structure, weathered by years of wind and rain, but to Lena, it was a gateway to adventures she could only imagine. Every afternoon after school, she would ride her bicycle down the winding path that led to the lighthouse, her backpack bouncing with each pedal stroke. One overcast afternoon, as the sky darkened with gathering storm clouds, Lena noticed something unusual. The lighthouse door, usually locked tight, was ajar. Her heart quickened with curiosity. She hesitated for a moment, then pushed the door open and stepped inside. The air was thick with dust and the scent of salt. Her footsteps echoed on the creaky wooden floor as she moved deeper into the lantern room, where the massive light mechanism once spun to guide ships safely through the night. Lena’s eyes widened when she saw a small, dusty chest tucked away in a corner. It was made of oak and decorated with strange carvings of stars and waves. She reached out and carefully opened it. Inside, she found a tattered map, a rusty key, and a faded note. The note read: “To those who seek the truth, follow the stars and find what is hidden.” Lena’s mind raced. She knew the map must be important, but it was old and fragile. Gently, she spread it out on the floor. The map was drawn in faded ink, showing the coastline, the lighthouse, and a series of strange symbols. One symbol looked like a star, another like a wave. Lena remembered her grandfather telling stories about secret treasures hidden along the coast during storms long ago. As she studied the map, a sudden gust of wind swept through the lighthouse, rattling the windows. Lena instinctively clutched the rusty key, feeling a strange energy surge through her. She looked at the map again and noticed that one of the symbols matched the shape of a small island just off the coast, marked with an X. She decided she had to explore further. The next day, Lena returned to the lighthouse with her backpack filled with supplies. Using the map, she made her way to the island, which was barely visible from the shore. The tide was low, making it easier to reach. When she stepped onto the island, she saw a cave hidden behind a cluster of rocks. Inside, the air was cool and damp. Lena used the rusty key she found to unlock a small door at the back of the cave. Beyond it, she discovered a chamber filled with old chests and artifacts—more than just treasure, it seemed to be a hidden history of her town’s past. Among the items, she found a diary that belonged to a lighthouse keeper from many years ago. His entries spoke of a secret mission to protect a powerful artifact that could change history. Suddenly, Lena realized that her adventure was about more than treasure. It was about uncovering stories and secrets that had been lost over time. She carefully packed the diary and some artifacts to bring back home, knowing she had found something truly special. As she looked out from the cave’s entrance, the storm had passed, and the sky was clearing. The lighthouse stood tall and proud against the blue sky, as if guarding the town’s hidden past. Lena felt a new sense of purpose. She knew that her discovery was just the beginning of many more adventures to come.

Answer the following questions based on the passage above.