Explanation
The correct answer is D: It contains different kinds of troubles.
In Greek mythology, Pandora was the first mortal woman who was created by the gods as a punishment for the sins of Prometheus. She was given a box (in some versions, it was a jar) as a gift and was instructed not to open it. However, her curiosity got the better of her, and she opened the box, unleashing all the evils of the world.
The phrase "Pandora's Box" has since been used to refer to any situation that, when opened or started, leads to many unforeseen problems or troubles. It is often used to describe situations where the initial problem seems small, but the consequences are widespread and difficult to control.
Therefore, option D: "It contains different kinds of troubles" is the correct answer.
