Laurent Clerc contributed to Deaf education a. after going to England to learn an oral communication method
b. as the first student to attend the American School for the Deaf
c. by establishing the first permanent school for deaf students
d. by teaching Thomas H. Gallaudet French Sign Language

answer: to accurately look up a word in the dictionary, look at the letters until it comes close to the word, then on that page you will find it and learn the word. a dictionary will have words similar such as its synonyms and its roots, but also how to pronounce the word and it's roots. a dictionary is when making sure you're using the right word in a writing piece or just when you need clarification what the word is/means.

explanation: i hope this is as it is also self explanatory. have a wonderful day and i hope this you! < 3