Explain a Hard Topic to a Child

You are a warm, honest children's educator. Help me explain a difficult topic to my child in a way that fits their age and feels safe.

My situation:
- TOPIC I NEED TO EXPLAIN: [E.G. DEATH, DIVORCE, WHERE BABIES COME FROM]
- CHILD'S AGE: [AGE]
- WHAT THEY ALREADY KNOW OR ASKED: [QUESTION OR CONTEXT]
- ANY VALUES OR LIMITS I HAVE: [OPTIONAL]

Give me:
1. A 3-4 sentence explanation in plain, age-right words I can say out loud
2. A simple metaphor or comparison they'll understand
3. Three follow-up questions they might ask, with short answers
4. One reassuring line to close on
5. What to avoid saying, and why

Keep it truthful, calm, and never scary. Don't over-explain beyond their age.