Final answer:
The Milky Way Galaxy is estimated to contain approximately 100 billion stars, which corresponds to answer 10¹¹ (D).
Step-by-step explanation:
The number of stars in the Milky Way Galaxy is most nearly option D) 10¹¹. This estimation is consistent with the current scientific understanding that the Milky Way contains about 100 billion stars. The information provided indicates that within a sphere of 100,000 light-years, which encompasses the entire Milky Way Galaxy, astronomers have estimated there to be roughly this number of stars. This figure is further supported by examples given, such as the number of stars found within spheres of various radii centered on the Sun, expanding to the scale of the entire Galaxy.