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Answer:

The top plate.


Stack

Stack of Plates

A stack is a way of organizing data in memory. Data items are visualized as behaving like a stack of physical items. Often a stack is visualized as behaving like a stack of dinner plates. Data are added and removed from the stack data structure in a way analogous to placing plates on the stack of plates and removing them.

Normally with a stack of dinner plates all operations take place at the top of the stack. If you need a plate, you take the one at the top of the stack. If you add a plate to the stack, you place it on top of the stack.


QUESTION 2:

Which plate is the last one that was added to the stack? Which plate will be the first one removed?