Answer:
B.Gallaudet University should appoint a person who is deaf as its next president. 
Explanation: 
The author's thesis is best summarized in option B. The first evidence where the author claims that a deaf person should be the president of Gallaudet University is when he mentions that disabled people have the right to integration and involvement in society. 
The second piece of evidence that supports the thesis is when the author says, "It [Gallaudet University] is held in the highest regard by deaf people throughout the United States and the world." Claiming that it should be an example for the nation and the world that the president of such a prestigious university has a disability. The last piece of evidence that supports his thesis is in the fifth paragraph "Gallaudet has a responsibility to set an example and thus to appoint a President who is not only highly qualified but who is also deaf." 
 
        
             
        
        
        
Preposition in the following sentence "When the Puerto Rican-born Clemente played his first game in 1955, fewer than twenty-five Hispanic players were on the rosters.":- in and on 
<h3>What is a preposition?</h3>
A preposition or postposition frequently joins with a noun phrase, which is presented as its complement or occasionally objects. Prepositions and postpositions are a class of words used to express geographic or temporal members of the family or mark distinct semantic roles. The phrase created by combining a preposition or postposition with its complement is referred to as a prepositional phrase (or postpositional phrase, adpositional phrase, etc.). These terms typically take the place of an adverb in a sentence.
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