I believe it's B. BRCA1 and BRCA2.
Explanation:
femur
The femur is one of the most researched bones in the human anatomy and forensic medicine. As the longest bone in the human body, it is well preserved in skeletal remains.
Cytokinesis is the part of the cell division process during which the cytoplasm of a single eukaryotic cell divides into two daughter cells.
Answer: B). CO₂
Cellular respiration is the process of conversion of food energy (glucose) into chemical energy (ATP). Oxygen and glucose are the reactants in the chemical reaction of this process and carbon dioxide and water are the products.
It is the circulatory system and respiratory system.