9. Stem cell therapies are not new. Doctors have been performing bone marrow stem cell transplants for decades. But when scientists learned how to remove stem cells from human embryos in 1998, both excitement and controversy ensued.The excitement was due to the huge potential these cells have in curing human disease. The controversy centered on the moral implications of destroying human embryos. Political leaders began to debate over how to regulate and fund research involving human embryonic stem (hES) cells.Newer breakthroughs may bring this debate to an end. In 2006 scientists learned how to stimulate a patient's own adult cells to behave like embryonic stem cells. These cells are reducing the need for human embryos in research and opening up exciting new possibilities for stem cell therapies.Which of the following statements would best support the claim that stem cell research should have been avoided prior to 2006?Doctors were using adult stem cells to help cure human disease.Doctors were removing stem cells from human bone marrow and using them to cure human disease.Doctors were destroying adult stem cells to help cure human disease.Doctors were destroying human embryos to help cure human disease.