Polar nuclei are located in

Answer: Option B

Polar nuclei are located in the Embryo sac.
The female gametophyte is also commonly called the embryo sac or megagametophyte.
The female gametophyte develops within the ovule and generally consists of three antipodal cells, one central cell, two synergid cells, and one egg cell.
Central cell is formed by the fusion of two polar nuclei. Out of two, one is derived from the micropylar end and the other from the chalazal end.