Arrange the following American poets in order of their birth:
A. Emily Dickinson
B. Ralph Waldo Emerson
C. Robert Frost
D. Henry David Thoreau
E. Walt Whitman
Choose the correct answer from the options given below:

The correct answer is B, D, E, A, C.

To arrange the given American poets in the correct chronological order of their birth, let us look at the birth dates and years of each writer:
1. B. Ralph Waldo Emerson was born on May 25, 1803. He was a seminal essayist, lecturer, philosopher, and poet who led the Transcendentalist movement of the mid-19th century.
2. D. Henry David Thoreau was born on July 12, 1817. A close friend of Emerson, he was a philosopher, naturalist, and poet best known for his book Walden.
3. E. Walt Whitman was born on May 31, 1819. He is widely regarded as one of America's most influential poets, often called the father of free verse.
4. A. Emily Dickinson was born on December 10, 1830. She lived a mostly introverted life and is celebrated for her unique, powerful, and unconventional poetic style.
5. C. Robert Frost was born on March 26, 1874. He is highly honored for his realistic depictions of rural New England life and command of American colloquial speech.

By ordering their years of birth from the earliest to the latest, we get:
1803 (Emerson) → 1817 (Thoreau) → 1819 (Whitman) → 1830 (Dickinson) → 1874 (Frost)

This timeline corresponds to the sequence: B, D, E, A, C.