Explanation:

- The sentence mentions Alice and the _knave_ of Hearts slaying a dragon, suggesting a partnership in an adventurous context.

- Knave:

- Historically means a dishonest or unscrupulous man, often referred to as a rogue or a mischievous figure.

- Option 1: Slaughter

- Means to kill in a violent way, particularly on a large scale. Not related to the definition of 'knave'.

- Option 2: Splendid

- Describes something magnificent or impressive. Not relevant to 'knave'.

- Option 3: Immoral

- Relates to not conforming to accepted standards of morality. Only loosely related to "knave" but not the best fit.

- Option 4: Rogue

- Rogue refers to a dishonest or unprincipled person, directly aligning with the definition of 'knave'.

- ?? Correct Answer: Option 4 - Rogue