Declaim that science and technology belongs to a particular race or generation is an attempt to thwart it's history .do you agree gives reasons for your submission

b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate. 

explanation:

the answer to your question is d because the clause conveys the tone of the man in the excerpt, which is arrogant and cocky. hope that .

c. in order of atomic number

actually the answer would be c.) jane addams worked hard to improve the lives of less fortunate people.