A53 year old female was hit by a car. she is unresponsive with deformity to the left femur and pelvic instability with deformity to the left femur and pelvic instability. she has diminished lung sounds on the left side. you should: a. stabilize the left femur with a traction splint b. perform a detailed physical assessment c. rapidly transport to the nearest emergency room d. immobilize her into a long backboard