Final answer:
One key advantage of human adipose mesenchymal stem cells is their d) ability to be differentiated into multiple cell types.
Step-by-step explanation:
The key advantages of human adipose mesenchymal stem cells (hMSCs) are that they are a rich source from waste fat tissues, they have decreased donor site morbidity, and they can be differentiated into multiple cell types.
However, one of the options listed, c) Invasive procedure, is not a key advantage of hMSCs.