Final answer:
The rectus femoris is likely to heal the fastest out of the injured muscles mentioned.
Step-by-step explanation:
Out of the four muscles mentioned, the rectus femoris is likely to heal the fastest. This muscle is part of the quadriceps femoris group in the anterior compartment of the thigh, responsible for extending the knee. Injuries to the quadriceps femoris muscles, including the rectus femoris, often have a good prognosis and tend to heal relatively quickly.