What is the text structure of this text is it
description
sequentual order
compare and contrast
cause and effect
problem and solution

The answer is Description

hope i helped^-^ 

It's description. It's describing the onion cells.

Obsession is the option that best describes the theme that Melville develops from the Excerpt. This implies the correct answer is Obsession.

Further Explanation

The correct option is obsession because from the excerpt we can boldly see that the writer wants the readers to know that the reason why Captain Ahab engaged the whale in a fight was not clear to everyone.

Captain Ahab was very determined to kill or capture the whale, even if he had to die in the process because the whale had subjected him to long-suffering and also a threat to other ships.

The whale was a novel written by Herman Melville in the 19th century.  The novel was about Ishmael, a fictional character and his obsessive quest of Ahab, the captain of the whaling ship, whose legs were cut off by a giant white sperm male during his encounter with the whale.

In the Novel, Ishmael made his intention known to go aboard in a whaling vessel. Ismael has traveled as a sailor but has not embarked on any trip as a whaler.  

Ismael embarked on a trip to New Bedford in Massachusetts where he paired a bed with a man named Queequeg because the Inn was full on his arrival and there was no single bed to accommodate him.

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His bone leg steadied in that hole; one arm elevated, and holding by a shroud; His bone leg steadied in that hole; one arm elevated, and holding by a shroud; Captain Ahab stood erect, looking straight out beyond the ship’s ever pitching prow

KEYWORDS:

AhabIsmaelvoyageswhite giant whalesobsession