The graph illustrates the number of pregnancies among four groups of 100 women. Each group used a different contraceptive method. The contraceptive method that is least effective is
- Abarrier
- Bchemical
- Cnatural
- Dsurgical
Biology 0610 · IGCSE · Sexual reproduction in humans
The graph illustrates the number of pregnancies among four groups of 100 women. Each group used a different contraceptive method. The contraceptive method that is least effective is