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STD 12 - 7. human health and disease — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 7. human health and disease1 Mark
MCQ
Active immunity is obtained by
  • A
    Antibodies
  • ✓
    Weakened germs infection
  • C
    Natural resistance
  • D
    None of these
✓

Answer

Correct option: B.
Weakened germs infection
b
It’s obvious.
 

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