Na última frase do texto, Therefore, exploring the possibility of using adult stem cells for cell-based therapies has become a very active area of ...

Na última frase do texto, Therefore, exploring the possibility of using adult stem cells for cell-based therapies has become a very active area of investigation by researchers., a palavra Therefore indica


(A) contraste.
(B) causa.
(C) concessão.
(D) condição.
(E) conseqüência.