Answer:
The daughter of educational activist Ziauddin, Yousafzai was born to a Pashtun family in Mingora, Khyber Pakhtunkhwa, Pakistan. Her family came to run a chain of schools in the region. Considering Muhammad Ali Jinnah and Benazir Bhutto as her role models, she was particularly inspired by her father's thoughts and humanitarian work.[6] In early 2009, when she was 11–12, she wrote a blog under a pseudonym for the BBC Urdu detailing her life during the Pakistani Taliban occupation of Swat. The following summer, journalist Adam B. Ellick made a New York Times documentary[3] about her life as the Pakistani military intervened in the region. She rose in prominence, giving interviews in print and on television, and she was nominated for the International Children's Peace Prize by activist
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I would say c. timelessness of the message.
Why? Because:
a) your piece of writing has to have a message - if there is no message, there is no point in writing it.
b) you have to have an intended audience you are writing for - it is not the same writing something for your friends, little brother/sister, professor or a potential employer.
c) the format of the message is important because of the previous factor and because the format usually affects the reception of the writing; nobody will be interested in your text if you write it without commas, fullstops, capitalized letters at the beginning of the sentence, or for example, without spaces between the words because it would be too confusing.
While, the timelessness is not as important. You are writing it for a special purpose now, and if it is good it might become timeless. But there are probably many great works (poems, scientific papers, novels, etc.) that were lost or forgotten, but that does not mean they were not great or significant.
Hope my answer is not too confusing :)
Context helps build up the plot in a story, leading up to the climax, and following to the end.