Choose the correct form of “lie/lay” (simple past) “My father ______ down for a nap.” Select the correct verb form for a completed action in the past.

Given data

• Completed action: father reclined for a nap.

Concept/Approach
Lie (recline): present = lie, past = lay, past participle = lain.Lay (put): present = lay, past = laid.

Option analysis
lay — correct past of “lie” (recline): “he lay down.”laid — past of “lay” (put), wrong verb.lies/lying — present forms, wrong tense.

Common pitfalls
Confusing “lay” (past of lie) with “laid” (past of lay).

Final Answer
lay