Which is an example of faulty coordination?

Mark Twain traveled all over the world, but he never forgot his childhood home in Missouri.
Tom Blackenship was not only a childhood friend of Mark Twain’s but also a model for the character Huck Finn.
Samuel Clemens was born in 1835, and he is better known by the pen name Mark Twain.
Places that Mark Twain describes in Huckleberry Finn are based on real places in Missouri.

Question

Which is an example of faulty coordination?

 	
	Mark Twain traveled all over the world, but he never forgot his childhood home in Missouri.
	Tom Blackenship was not only a childhood friend of Mark Twain’s but also a model for the character Huck Finn.
	Samuel Clemens was born in 1835, and he is better known by the pen name Mark Twain.
	Places that Mark Twain describes in Huckleberry Finn are based on real places in Missouri.