In the diagram below, which organelle is the cell nucleus, which stores the
cell's genetic material?

The genetic material of the cell is generally stored in the nucleus of the cell. The B structure in the diagram shows the nucleus which is the main location of storage of genetic material.
Genetic material is the substance in the cell nucleus that is responsible for heredity. It can be DNA in many organisms and in some organisms, it can be RNA also.
The genetic material of the cell is generally stored in the nucleus of the cell.
The B structure in the diagram shows the nucleus which is the main location of storage of genetic material.
Thus, the correct option is B.
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