Concept:The centrosome is an animal cell structure that plays a key role in spindle fibre formation during cell division.Explanation:In animal cells, the centrosome organises spindle fibres, which help separate chromosomes during division.This function is specifically important in animal cell division.The cell membrane, cytoplasm, and ribosome are present in all living cells, not just during division.Therefore, the centrosome is the structure most closely linked to cell division in animal cells.Answer:C. Centrosome