Recently, Border Patrol agents received leads from informants about possible illegal activity at La Rosita Park. When agents arrived at the park, they drove through the parking lots, looking for individuals and vehicles matching their leads. The Agents examined several suspicious vehicles, including many unregistered vehicles. All of the unregistered vehicles contained bundles of marijuana. No arrests have been made in connection with this incident.

Question

Quizplus · Accepted Answer

The fourth sentence contains the information that all of the unregistered vehicles contained bundles of marijuana. Accordingly, if a vehicle did not contain bundles of marijuana, it could not be one of the unregistered vehicles since all unregistered vehicles contained marijuana. Therefore, it can be deduced that all of the vehicles that did not contain bundles of marijuana were registered.
Response A contradicts the information in the last sentence. Response B contradicts the information in the fourth sentence. Response C assumes that only unregistered contained bundles of marijuana, but there is insufficient information to make that conclusion. Response E assumes that some of the registered vehicles also contained bundles of marijuana, but there is insufficient information to make that conclusion.

Recently, Border Patrol Agents Received Leads from Informants About Possible