The old map led them deep into the whispering forest. After hours of walking, they found a hidden cave entrance, partially covered by vines. Inside, the air was damp and cold, and a faint glow emanated from deeper within. As they cautiously stepped forward, a strange symbol on the cave wall began to pulse with light. Suddenly, a low rumble echoed through the cavern, and the ground began to shake... Which of the following is the most logical continuation of the story?
A) They decided to turn back and go home, realizing the adventure was too dangerous.