Which of these is noah webster famous for?

a. first american lexicographer
b. inventing the historical method of research in lexicography
c. compiling the first oxford english dictionary
d. standardization of the english language

D. standardization of the English language.

Explanation:Noah Webster, an American Lexicographer is popularly known as the "father of American Scholarship and Education". He has made numerous efforts in American history not merely in the field of lexicography but also in order to provide American English the relevance it has today. He is also known as the English-language spelling reformer for his magnum opus "An American Dictionary of the English Language"(1828) laid the foundation of the Merriam-Webster Dictionary as we know it today. He also started "A Grammatical Institute of the English Language", published "The American Spelling book" (1783) and many more. Thus, all these can be summed up under the head standardization of the English language in brief.

600 dollars if i'm not mistaken.