Which of the following Surahs was the first to be revealed in its entirety, after the initial verses of Surah Al-Alaq?

Explanation

While the first Ayahs revealed were from Surah Al-Alaq, the first complete Surah to be revealed was Surah Al-Fatiha. Some scholars also mention Surah Al-Muddaththir as an early complete revelation, but Al-Fatiha is widely considered the first complete Surah in terms of its structural completion.