أ Thoughtlessly destroying our environment, the book states that if we continue at the present pace, the extinction of many species is inevitable. ب If we continue at the present pace, the book states that the extinction of many species thoughtlessly destroying our environment is inevitable. ج At the present pace, the book states that thoughtlessly destroying our environment is inevitable if we continue the extinction of many species. د The book states that the extinction of many species is inevitable if we continue thoughtlessly destroying our environment at the present pace.