Question $4$ of $14$

$00$ Grace wants to sell her motorcycle, and Roderick is looking for a used motorcycle to buy. Roderick takes it for a test drive.

Grace knows that the clutch is going out on her motorcycle, the fuel filter is leaking, and the tires will need to be replaced soon.

If she does not disclose this information to Roderick and he cannot tell from his test drive, this is an example of