Final answer:
In 'The Chambered Nautilus,' the nautilus is referred to as the C) 'Ship of Pearl'.
Step-by-step explanation:
The nickname for the nautilus used in the first line and one other time in the poem 'The Chambered Nautilus' is C) 'Ship of Pearl'.
This is reflected in the opening line of the poem, which sets the tone for the extended metaphor that Oliver Wendell Holmes uses to describe the nautilus.
Holmes compares the inner chambers of the nautilus shell, which are lined with mother-of-pearl, to a ship crafted from pearls, evoking the elegance and beauty of the creature's natural design.