The recommended schedule for childhood immunizations includes DTaP vaccine at ages:

✓ Correct Answer: Option B

DTaP series: 5 doses at 2, 4, 6, 15-18 months, and 4-6 years. Protects against diphtheria, tetanus, pertussis. Tdap booster at age 11-12 and during every pregnancy (27-36 weeks).