According to the Article, why were parents in the 1930s worried about their children listening to the radio?
A
Parents were concemed that the technology might interfere with conversation, music
practice, and reading.
B
A Stanford University study wamed parents that the technology might cause children to
become violent
с
Studies had found that too much time with the technology could begin to harm children's
sleep pattems.
D
Parents had been wamed by the American Academy of Pediatrics that the technology
could lead to unhealthy weight gain.

idk

explanation:

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.