The Padma is one of the biggest rivers in Bangladesh. (Positive)
No other river in Bangladesh is so big as the Padma.
Very few river in Bangladesh is as big as the Padma.
Very few rivers in Bangladesh are as big as the Padma.
Correct
No other rivers in Bangladesh are as big as the Padma.
Explanation:
Correct Answer is: Very few rivers in Bangladesh are as big as the Padma.
one of the যুক্ত superlative degree কে positive করার নিয়ম –
very few + superlative এর পরের অংশ + Verb (Plural) + as + superlative এর positive form + as + প্রথম subject.
Biggest এর positive form হচ্ছে Big এবং নিয়মানুযায়ী সঠিক উত্তর – Very few rivers in Bangladesh are as big as the Padma.