Answer:
The correct answer would be self-renewal.
Adult stem cells or somatic stem cells are undifferentiated cells which are capable of divide and differentiate into a specific cell type which help in repairing and regenerating damaged or injured tissues.
They have two properties: self-renewal and multipotency.
Self-renewal is the property by which they maintain themselves into an undifferentiated state even after going through a number of cell division cycles.
Multipotency is a property which a stem cell can differentiate into several different cell types.
Thus, stem cells found in adult tissue, such as in the brain, bone marrow, skin, muscle, and liver, are only capable of self-renewal and differentiate into different cell types.