Which of the following statements does not accurately describe stem cells?
a. the use of stem cells may allow scientist to use undifferentiated cells to repair or replace bad cells.
b. the use of stem cells is without any objections since it can be used in therapies to humans.
c. embryonic stem cells make up te inner cell mass of blastocyst .
d. adult stem cells are multipotent and can differentiate into types of cells .