Final answer:
A lighthouse is often used as a metaphor for hope and guidance, serving as a beacon of light and providing a sense of direction and safety.
Step-by-step explanation:
A) Lighthouse Symbol: A lighthouse is often used as a metaphor for hope and guidance. It serves as a beacon of light to ships at sea, warning them of danger and providing a sense of direction and safety. The lighthouse represents a source of hope and a guiding light to millions.