Select the most appropriate option that can substitute – He asked his father when would come the next letter.

📘 Grammar Rule: Indirect Questions

In indirect speech:
👉 We do not use question word order (no inversion)

✔️ Structure:
Subject + verb (normal order)
❌ Not: would + subject

✨ Correct Sentence:

He asked his father when the next letter would come.

❌ Option Analysis:

• come the next letter → incorrect structure ❌
• would the next letter come → question form (wrong here) ❌
• No substitution required → incorrect ❌
• the next letter would come → ✔️ correct