PDA can be represented with the help of:

A Pushdown Automaton (PDA) is a computational model that extends a finite automaton with a stack memory.

There are three standard methods used to represent the behavior and structure of a PDA formally.

• Instantaneous Description (ID): Captures the current configuration of the machine.

• Transition Diagram: A graphical representation showing states and transitions.

• Transition Table: A tabular format defining state transitions and stack operations.

Since all these methods are valid ways to represent a PDA, the comprehensive option is the correct choice.