The radio source is located in a place consistent with the center of our galaxy.

The answer for this completion exercise is: "Sagittarius A (Sgr A)". This is located in a constellation called Sagittarius.

 Therefore, the complete sentence is shown below:

 The radio source "Sagittarius A (Sgr A)" is located in a place consistent with the center of our galaxy. 

Idon't know it i just need my points lol

The best answer is (a) which is universal law is in effect at all times. it is constantly at play in everything we do and governs our lives. it is also important to note that universal law applies to not only everything on earth, but everything in the universe as well, which is another reason why it is in effect at all times.