For some time, scientists refused to believe that Earth's continents are made of moving tectonic plates. Physicists, who could not devise a theory to explain the now-accepted process, rejected the theory outright, as did geologists, who were far too (i)____________ in their thinking, thereby (ii)____________ the advancement of science for a time. A. officious B. checking C. assiduous D. limning E. dogmatic F. asseverating