Where are chromosomes found in eukaryotic cells?

Chromosomes in eukaryotic cells are primarily found in the nucleus. The nucleus serves as a membrane-bound organelle that houses the genetic material of the cell. This genetic material is organized into structures called chromosomes, which are composed of DNA and protein. This organization allows for the efficient packaging of DNA, protection of genetic information, and effective regulation of gene expression during cell division and other cellular processes. In contrast, the other options do not serve as locations where chromosomes are found; the cytoplasm is where various cellular processes occur, the cell membrane is the boundary of the cell, and ribosomes are the sites of protein synthesis, not storage of genetic material.