'Language is used to defend and challenge ideas'. Evaluate this statement with the close reference to the purpose of language.

A language is a tool necessary for rejecting or defending the ideas.

Explanation:

The language can be used to defend their ideas from the criticism of peers and the general public, a person can express oneself and can present views through language. The person can challenge ideas through self-gained knowledge and strong communication mode which is only possible through language. The communication and expression of ideas is the main purpose of language.

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.