I believe that the answer is D. "Self-Reliance" is an example of a short memoir. It a record of events written by a person having intimate knowledge of them and based on personal observation.
The term “intelligent planet” as it is used in "The Intelligent Planet" means that:
It suggests that artificial technologies will develop the ability to reason.
Michio Kaku in his “The Intelligent Planet” gives his argument that in the coming future after the immense growth of the Internet, human intelligence would not be required for any work. The programmers are to add intelligence to the use of the internet which would work without the instructions of humans. He talks about the evolution of the internet in the intelligent society.
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As long as you have super-fast internet speed, (and exceptional speed in typing) you can find more definitions for a word then just in a dictionary. (for example, while the dictionary (book) gives you only 3 definitions, dictionary . com will give you 5 or 6 AND examples.
hope this helps