Final answer:
An internal conflict refers to a situation where a character is torn between two conflicting desires or values with compelling arguments for and against each option, leading to emotional turmoil.
Step-by-step explanation:
The type of conflict that involves one option with equally desirable and undesirable characteristics is known as an internal conflict. This form of conflict occurs within a character, where they are dealing with a dilemma that causes emotional turmoil or requires a difficult decision. A classic example of internal conflict is when a character must choose between two conflicting desires or values, both of which have compelling arguments for and against them. This can be seen in literature when a character is torn between their duty to family and their duty to the state, showcasing the intense personal struggle and the need for them to weigh the consequences of each choice.