Final answer:
Intending to deceive someone is a necessary condition for telling a lie. Intention to deceive must be present for a statement to be considered a lie, but it may not be sufficient on its own without the false statement being believed and the consciousness of the individual to lie.
Step-by-step explanation:
Intending to deceive someone is a necessary condition for telling a lie. A lie, by definition, involves making a statement that the speaker knows to be false, with the intention of deceiving the hearer. If someone tells a falsehood without the intention to deceive, for instance by mistake, this would not be classified as a lie.
In the context of truth analysis, a necessary condition is something that must be present for a statement or condition to be considered true. A sufficient condition, on the other hand, would mean that if the condition is met, the statement or condition is guaranteed to be true. In the case of lying, intention to deceive is necessary but might not be sufficient on its own, because the false statement must also be believed and it must be within the individual's consciousness to tell a lie.
Given this understanding, the answer to the question is C. Necessary. Intending to deceive does not automatically justify a falsehood as morally acceptable or provide a justifiable reason for lying. It is a necessary condition because without the intent to deceive, an untrue statement may not be classified as a lie, but it is not sufficient on its own to constitute the act of lying without the presence of other conditions, such as the statement being false and the liar's awareness of its falsity.