Subaita is one of the most intelligent girls in the class. (Make it Comparative)

Superlative এ One of the থাকলে Comparative করার সময় -
than many other + Plural Noun অথবা than most other + Plural Noun বসে।

সুতরাং Comparative করার ক্ষেত্রে খ) Subaita is more intelligent than many other girls in the class. এবং গ) Subaita is more intelligent than most other girls in the class. উভয়ই সঠিক।