A. I lay down for a nap.
B. I lie down for a nap.
C. I lying down for a nap.
D. I lays down for a nap.
Answer: I lie down for a nap.
A. I lay down for a nap.
B. I lie down for a nap.
C. I lying down for a nap.
D. I lays down for a nap.
Answer: I lie down for a nap.
Additional Information: 'Lie' in this context refers to reclining and is used in the present simple form.
Subjects: Verbs, Parts of Speech