that carboxyhemoglobin is (protein) the stable complex of carbon monoxide with hemoglobin; it prevents the normal complexing with oxygen and thus leads to anoxia while carbaminohemoglobin is a compound of haemoglobin and carbon dioxide, one of the forms in which carbon dioxide exists in the blood.
Well, this is what I know from school but if you have any questions about this feel free to ask!!
Hope this helps and best of luck to all.
The answer is D) denser plates slide under lighter plates