sCiEntists hAvE ------- For yEArs thAt turBulEnCE within thE gAsEous ClouDs FounD throughout thE milky wAy stymiEs stAr FormAtion, But somE oF thE ForCEs BEhinD this DisturBAnCE rEmAin -------.
A．DouBtED... insuFFErABlE
B．positED... unknown
C．ArguED... rElAtivE
D．AssumED... ExotEriC
E．(E) ConvEyED ... insupErABlE