Step 1: Recognize the context.
In William Faulkner's *The Sound and the Fury*, Benjy's parents are referred to as the Jacksons, which is a prominent surname in the novel.
Step 2: Analyze the options.
- (A) Johnsons: Incorrect. While "Johnsons" is a common surname, it is not used for Benjy's parents in the novel.
- (B) Jacksons: Correct. The correct family name of Benjy's parents in the novel is "Jackson."
- (C) Smiths: Incorrect. "Smiths" is another common surname, but it is not used for Benjy's family.
- (D) Leohorns: Incorrect. This surname is not related to the character in question.
Step 3: Conclusion.
The correct family name for Benjy's parents is "Jacksons."