Internal cavity formed by cell division prior to gastrulation is

Enteron

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Blastopore

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Blastocoel

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Coelom

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Solution

The correct option is B Blastocoel
A blastocoel or blastocyst as in mammals is the fluid-filled central region of a blastocyst. A blastocoel is formed during embryogenesis when a zygote divides into many cells through mitosis. A blastocoel can be described as the first cell cavity formed as the embryo enlarges. It is a necessary step for gastrulation.
So the correct option is 'Blastocoel'.

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