A planetary system is a system of objects in space that orbit which of the following? A star

The Sun

The Moon

Non-terrestrial planets

the correct answer is a

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.