Final answer:
Chromosomes in a eukaryotic cell are found in the nucleus, where the genetic material is securely stored, separated from other cellular components like ribosomes and endomembrane system organelles.
Step-by-step explanation:
In a eukaryotic cell, chromosomes are located within the nucleus. This is where the cell's genetic material is housed and protected. Outside of the nucleus, eukaryotic cells have a complex endomembrane system that includes organelles like the endoplasmic reticulum and the Golgi apparatus, which are involved in transport and other functions. Ribosomes, which are the sites of protein synthesis, can be found in the cytoplasm or attached to the rough endoplasmic reticulum. Unlike chromosomes, ribosomes are also present in mitochondria and chloroplasts with slightly different characteristics resembling those of prokaryotic cells.
To answer the multiple-choice question directly: the location of the chromosomes in a eukaryotic cell is option c. In the nucleus.