Final answer:
It is fortunate that Sgr A* is not currently 'eating' because active accretion could disrupt the orbits of surrounding stars, produce harmful radiation, and contribute to gravitational waves—factors that could make the galactic center less stable.
Step-by-step explanation:
The question 'Why is it fortunate that Sgr A* is not currently eating?' involves understanding the nature of Sgr A*, which is the supermassive black hole at the center of our galaxy, the Milky Way. The term 'eating' in this context refers to the accretion of matter into the black hole. If Sgr A* were actively consuming significant amounts of nearby matter, this process could potentially disrupt the orbits of surrounding stars, produce high-energy radiation harmful to nearby planetary systems, and cause gravitational waves, which while fascinating in a scientific context, can indicate a dynamic and possibly violent environment. However, none of the provided options specifically address this entirety.
Discussing cosmic energy conservation, gravitational fields, and why the universe's conditions allow for life, one can appreciate the importance of having a stable environment in regions like the galactic center. The relationship between gravity, spacetime curvature, and the behavior of light near a black hole also illustrates why changes in Sgr A*'s activity could have significant effects within its vicinity. Although gravitational waves are also a consequence of massive objects in motion, such as binary star systems, they are not explicitly mentioned in the context of Sgr A*'s activity. Therefore, the most fitting response from the given options is: b) To avoid disrupting nearby stars.