Correct Answer - Option 4 : TRAINS
Option 1. PROMOT → PROCRASTINATION (cannot be created as M is missing)
Option 2 . RUSTIN → PROCRASTINATION (Cannot be created as U is missing)
Option 3. CREATE → PROCRASTINATION (cannot be created as E is missing)
Option 4. TRAINS → PROCRASTINATION (Can be created)
Hence, "TRAINS" is correct.