Why is the Leaning Tower of Pisa on a tilt?

Here is the question :

WHY IS THE LEANING TOWER OF PISA ON A TILT?

Here is the option for the question :

• The architect liked it that way
• It was built on soft ground
• War damage shifted it
• No one really knows

The Answer:

And, the answer for the the question is :

Explanation:

[STC0019956]. When the third level of the Pisa cathedral complex was built in the 14th century, builders realised that the belltower tilted slightly. They attempted to compensate for the soft ground by making the remaining levels slightly shorter on one side, but the strategy failed. The tower is now five metres tilted to one side.