What finding would indicate a conductive hearing loss in the left ear?

The finding that would indicate a conductive hearing loss in the left ear involves the result where the Weber test lateralizes to the right and the Rinne test shows bone conduction (BC) is greater than air conduction (AC) specifically for the left ear.

In a conductive hearing loss scenario, sound is not effectively transmitted through the outer or middle ear, leading to an abnormal Rinne test result where bone conduction is better than air conduction in the affected ear. The Weber test lateralizing to the opposite side (the right ear, in this case) indicates that the affected ear (left) is experiencing diminished sound perception due to the conductive issue, causing the sound to lateralize toward the better hearing ear.

The combination of these findings highlights that the left ear has a conductive issue, making this option the correct identification of conductive hearing loss.