A. Stephen covey
B. Carl Sagan
C. Stephen Hawking 
D. steven Weinberg

Submitted by: Aurangzeb Bhutto

Stephen Hawking, a renowned theoretical physicist, authored “A Brief History of Time.” This book, published in 1988, explores complex scientific concepts such as cosmology, black holes, and the nature of time, but presents them in a relatively accessible manner for non-experts. It became a bestseller and has been widely acclaimed for its ability to make difficult topics understandable to a general audience. Carl Sagan, known for his work in astronomy and science popularization, wrote other influential books like “Cosmos,” but he did not write “A Brief History of Time.” Similarly, while Stephen Covey is known for his self-help and leadership books like “The 7 Habits of Highly Effective People,” he is not the author of “A Brief History of Time.” Steven Weinberg, a theoretical physicist, made significant contributions to the field of particle physics, but he is not the author of this particular book.