If a person has absolutely no clothing or coverings, what is the legally superior method for them to perform their prayer?

Exposure of the Awrah and Impurity on Clothing

• Praying standing naked with standard bowing and prostrating.
• Sitting down, extending both legs toward the Qiblah, and performing bowing and prostrating with gestures (Ima').
• Waiting until they find clothes, even if the prayer time ends.
• They are exempt from praying entirely.