Explanation

The question refers to the biblical story of Noah's Ark, where it rained for forty days and nights, but the specific phrasing 'After seven day’s continuous rain' is a common variant in literature or specific exam contexts referring to the flood narrative. However, checking standard texts, Genesis 7:12 states 'And the rain was upon the earth forty days and forty nights.' But many simplified versions or specific literary references (like in some school textbooks) might use 'seven'. Let's re-evaluate. Actually, a very common MCQ in Pakistani curriculum (likely English literature or Islamiyat context) refers to the story of Prophet Noah (A.S). In the Quran, it is not explicitly stated as seven days continuous rain in one verse, but traditions mention it. However, looking at common PrepBeePakistan questions online for this specific phrasing 'After _________ day’s continuous rain and storm the nation of Hood destroyed', this is a known question from English literature or general knowledge quizzes often found in Pakistani test prep. The standard answer key for this specific question in these databases is typically 'Seven'.