সঠিক উত্তরটি হচ্ছে: Threshold. English Meaning: The point at which something begins. Bangla Meaning: প্রবেশদ্বার; শুরু; প্রারম্ভ; দ্বারপ্রান্ত।
Synonym: Beginning, Start, Inception, Commencement, Launch. Antonym: Close, End, Conclusion, Period. Example Sentence: If your income rises above a certain threshold, your tax rate also rises.
Source: Merriam Webster Dictionary, Accessible Dictionary by Bangla Academy.