Plz article: finding sacagawea

which sentence expresses a central idea of the article?

a. "our family owned only an encyclopedia and a well-used dictionary." (paragraph 2)

b. "the presence of a mother and child was a sign that the expedition was a peaceful one an keep it safe from indian attack." (paragraph 5)

c. "my father said he didn't know, but he'd wondered himself if we had a common ancestor." (paragraph 9)

d. "we explored tiny libraries on american indian reservations." (paragraph 10)

answer: refers to a diverse array of media technologies that reach a large audience via mass communication. the technologies through which this communication takes place include a variety of outlets. your welcome i hope you me out in the future : (

explanation:

i would think the answer is between b and d i would say d sorry if wrong

your wrong i made a 2.34 out of 4 the answers are 1st qeustion all of them are correct. question 2 the han emperors chose smart, victorious men to work in the government. question 3 during the han dinasty, the teaching in the analects of confucius set the tone for public life. question 4 on a and b are correct.