Here is a site my buddie has to help you. Well co-owner..
https://www.quora.com/Why-is-fresly-prepared-FeSO4-required-for-the-ring-test
Answer:
1s2 2s2 2p6 3s2 3p6 4s2 3d 104 p6 5s2 4d 105 p2
The answer is B but iam not sure about the answer
A rain gauge a (clear) tube or cup with inches marked and set outside when raining and see how much rain there is
