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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

The teaching activity undertaken by Bell was considered 'nobel' particularly because ----.

A. He was teaching the physically under privileged persons
B. He was working for the betterment of the deaf and the dumb
C. He established a school for the deaf and the dumb- the first of its kind
D. He was a very famous scientist of his times
সঠিক উত্তরঃ B. He was working for the betterment of the deaf and the dumb
Explanation: