The verb "to lay" means to put or place something down and requires an object.

• (1) ❌ Incorrect — “Laying down” should be “lying down” (no object).
• (2) ❌ Incorrect — “Lays on the bed” → should be “lies on the bed.”
• (3) ❌ Incorrect — “Has lain” comes from “to lie,” not “to lay.”
• (4) ✅ Correct — “She laid the book on the table.” → correct past tense of “lay” with object “book.”

✅ Correct Answer:  She laid the book on the table.