Answer:
There are many ways you could answer this question.
Explanation:
If it is a physicl copy, you should store it with your other important doncuments of course, or have protective sheets on or around it for safety. If you are talking legally, a notarized document is always going to be more official that a non notarized document, so if you get it notarized, then you can protect yourself and the importance of the document legally.
Usually (rises) because of general economic growth. if there is a high demand for the goods then the price will most likely rise in order for consumers to buy a limited amount. its also a sort of scheme to increase the full potential of price. prices for a good would probably not rise if the producer/provider has an exceptional amount of stock. from price changes you can determine the demand. high price is high demand and less stock. low price is low demand and likely a surplus therefore the low price is to remove the surplus more easily (low demand)