1.

The historical Tower of Pisa does not fall even though it is slanting, because . . . . . . .

A. The vertical line going from its center of gravity goes through the base.
B. The vertical line passing through its center of gravity does not pass through the base.
C. There is divine influence behind this.
D. This is a surprise.
Answer» B. The vertical line passing through its center of gravity does not pass through the base.


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