Answer B) Adductor longus
The nerve passing through the obturator foramen is the obturator nerve, which is at risk of being injured during pelvic surgeries or as a result of pelvic trauma.
The obturator nerve innervates the muscles of the medial compartment of the thigh, including the adductor longus, adductor magnus, adductor brevis, gracilis, external obturator, and, occasionally, the pectineus muscle.
It is frequently damaged during midurethral sling surgeries, as well as by pelvic ring fractures and obturator hernias.
Damage to this nerve can cause sensory deficits along the medial thigh and weakness of hip adduction.