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B
Aplysia
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C
Dentalium
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D
Xancus
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Solution
The correct option is DNeopilina In molluscs, most of the time body is unsegmented but distinct in head, muscular foot, visceral mass/ hump but internal organs are unsegmented.
But in Monoplacophora also called as living fossil is segmented, Neopilina an example of class monoplacophora and it depicts that the internal organs are segmented.