Answer: The choice of a submarine to either sink or float depends on the captain of that submarine. For a submarine to sink the captain just have to allow water to fill the water tank (lock), making the submarine more dense than the water it has displaced. For it to float, it just have to empty the water tank and allow air to fill it.
When a boat in a canal lock sank, the water level will rise, because the volume of the boat has displaced more water, and this displaced water will cause the water level to rise. The space occupied by an object in a water, is equal to the volume of water been displaced.
Any negative value will produce this graph
Answer: D. Maria would not have to pay anything
Explanation:
Maria would not have to pay anything because this does not fall under the terms of a QUASI CONTRACT as she did not gain unjustified enrichment.
In a QUASI contract, the main bone of contention is the ACCEPTANCE of a service but not the AGREEMENT of terms which can lead to unjust enrichment. In other words, if you ACCEPT a service but did not request it, you still have to pay.
Maria in this case neither requested NOR ACCEPTED the service and so she does not have to pay.