Final answer:
The term defined as the intentional and wrongful use of a government-issued charge card is 'Willful Misuse.' This implies deliberate violation of the rules, distinct from accidental or careless spending.
Step-by-step explanation:
The term that is defined as "the intentional use of the Government-issued charge card in violation of applicable regulations" is Willful Misuse. Option c, Willful Misuse, clearly indicates the user is knowingly violating the policies and regulations associated with the use of government-issued charge cards. It's important to distinguish deliberate actions from mere negligence or recklessness when addressing the misuse of government resources.
In contrast, Unauthorized Expenditure might imply spending without proper authority but not necessarily with intent to violate, Negligent Spending suggests a lack of due care, and Reckless Spending indicates a lack of concern for the consequences, but without the element of intentionality present in Willful Misuse.