After Sustaining a Fracture, a Patient Was Treated by Applying

After sustaining a fracture, a patient was treated by applying ice and a cast. After several weeks, the cast is removed and the patient is able to ambulate without difficulty. Which positive local factors influenced this patient's bone healing?

A) immobilization
B) timely correction of displacement
C) application of ice
D) delay in correction of displacement
E) malnutrition