A software company submits a project to a client, and the contract states, "The system must support daily automatic backups." The development lead reports: "The backup feature is basically implemented and generally usable, please proceed with acceptance." According to the law of excluded middle, what is the most appropriate action for the client's on-site manager?

Answer: B

• ASince it is "basically implemented," treat it as accepted to avoid delaying the launch.✗ This substitutes the vague expression "basically implemented" for the contractual standard, violating the law of excluded middle—whether a clearly defined feature is present should be conclusively determined.
• BTest the "daily automatic backup" against the contractual standard; pass if it works, fail if it doesn't.✓ The law of excluded middle requires a definitive yes/no answer based on the clear standard: if it meets the requirement, it holds; if not, it doesn't. This is the only compliant action.
• CAsk the development lead to change "basically" to "completely" before discussing acceptance.✗ This only alters wording without actual verification, still evading the clear standard through wordplay; the law of excluded middle targets vague concepts, not replacing one vague word with another.
• DConsider whether the automatic backup "works well" as a matter of degree with no clear boundaries, requiring only negotiation.✗ The contract states "support daily automatic backup"; whether this is supported is a clearly bounded fact, not an evaluative degree like "works well." This confuses a degree question with a clearly bounded one.