The process of formation of a reddish-brown substance on the surface of the iron objects in the presence of flaky moisture and air is called rusting.
I answered the question but it got deleted?? why?
The answer is solid because gas is a chemical and water is a compound
You have selected the correct answer and blobbed over it with your pencil.
I assume you must have looked at Saturn's average distance, found 1427,
divided that number by 6, got 237 and change, then looked at the others,
and found that 228 was the only one that's anywhere close.
I think its all four of them could be wrong but try all four !!!!!!