Which name is represented by the letter O?

The letter O is commonly associated with the name Ocean, as it starts with the letter O itself. When considering the phonetic alphabet, Ocean aligns perfectly with the initial "O," making it a straightforward representation. This connection is particularly important in contexts such as communication or coding, where clarity in identifying letters and corresponding names is essential.

The other names listed do not begin with the letter O. For example, Nora and Tom start with N and T, respectively, and K does not correspond to a name that begins with O. Therefore, Ocean stands out as the only valid choice representing the letter O.