I think the best answer would be the last option. The main purpose of a service panel in a house is to keep electrical hazards localized. Service panels are used to identify circuit loads and isolate these loads so when you want to check the equipment you can easily identify the line. Also, it would serve as the isolation point to avoid any electrical hazards.
Answer:
just put the molecules and atoms where they belong
Explanation:
The outer planets have a high gravity due to their large size
repeated mesurement can reduce the error
it is true
if you take any mesurement repeatedly and the average is taken, the error will be less