Lena had always loved exploring. As a child, she would spend hours wandering through the dense woods behind her house, imagining herself on grand adventures. Now, at the age of twelve, her curiosity hadn’t faded; if anything, it had grown stronger. One warm summer afternoon, she decided to venture further than she ever had before, determined to uncover the secrets of the mysterious old oak tree at the edge of the forest. The tree was enormous, its twisted branches stretching high into the sky like the arms of a giant. Legend among the neighborhood kids said that the oak was over three hundred years old and that strange things happened near it. Some claimed they had seen lights flickering through its leaves at night, while others whispered about hidden passages beneath its roots. Lena had always been fascinated, but she had never dared to explore it closely—until today. With a backpack filled with a notebook, a flashlight, and a snack, Lena stepped into the woods, feeling a thrill of excitement. As she moved deeper into the forest, the sounds of chirping birds and rustling leaves surrounded her. The sunlight filtered through the dense canopy, casting shifting patterns of light and shadow on the ground. After twenty minutes of walking, she finally reached the ancient oak. The tree was even more impressive up close. Its bark was rough and gnarled, covered in patches of moss and lichen. Lena ran her fingers along its trunk, feeling the rough texture beneath her fingertips. She looked up, marveling at the thick branches that seemed to reach out like welcoming arms. Her heart pounded with anticipation. What secrets might this tree hold? Lena decided to examine the base of the tree first. She knelt down, pushing aside some fallen leaves and twigs. To her surprise, she discovered a small, hollow space within the roots. Curious, she shined her flashlight inside. To her amazement, she saw a narrow tunnel, just wide enough for her to crawl through. Her eyes widened with excitement and a touch of nervousness. Could this be the hidden passage the legend spoke of? Taking a deep breath, Lena entered the tunnel carefully. It was damp and cool, and she had to crawl on her hands and knees. The passage twisted and turned, but she kept going, driven by her sense of adventure. After a few minutes, she emerged into a small underground chamber. The space was damp but surprisingly dry. In the corner, she noticed something shiny—an old, weathered box covered in dust. Lena approached it cautiously. With trembling hands, she opened the box. Inside, she found a collection of strange objects: a faded leather wallet, a tarnished pocket watch, and a crumpled piece of paper with faded writing. Carefully, she unfolded the paper. It was a letter, written in elegant handwriting. The letter told the story of a young boy who had lived in the area many years ago and had hidden his prized possessions in the tree before he moved away. It was a secret treasure, meant to be discovered only by someone with a true sense of adventure. Lena felt a wave of excitement wash over her. She carefully took the objects, knowing they belonged to someone long gone but still part of the forest’s story. She promised herself she would keep the secret and protect the old oak’s mystery. As she made her way back to the surface, she looked up at the towering branches, feeling grateful for her discovery. From that day on, Lena visited the oak tree often, each time feeling like she was part of a grand adventure. She knew that the forest held many more secrets, waiting patiently to be uncovered by those brave enough to explore. And she was ready for whatever mysteries lay ahead.

Answer the following questions based on the passage above.