Implantation is the major sign of pregnancy for various women, it is a stage in which a zygote of fertilized egg limplants into the wall of the uterus.
Implantation usually takes place 6 to 10 days post ovulation, or day 20 to 24 of a menstrual cycle. However, it can take place a few days later or earlier. Once fertilization takes place, the egg remains the fallopian tuve for three days prior of getting inside the uterus and starts to implant itself to the walls of the uterus.
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It would be d because a cell is least complex and organ system is most complex
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A drug is any chemical substance that alters the body physically or mentally for a non - nutritional purpose.
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In the given case, Adeline is probably to get scared and shocked regarding menarche as the culture of her time did not assist in educating young women about menarche.
Menarche refers to the initiation of the menstrual cycle, or first menstrual bleeding, in females. From both the medical and social point of view, it is usually regarded as the principal incident of female puberty, as it indicates the probability of fertility.