The _____ period occurs between two to eight weeks after fertilization.

• A. germinal
• B. embryonic
• C. fetal
• D. sensorimotor

Answer: (B)

Verified step by step guidance

1. Understand the stages of prenatal development: The prenatal development is divided into three main stages: germinal, embryonic, and fetal.
2. Identify the time frame for each stage: The germinal period occurs from conception to about two weeks, the embryonic period occurs from two to eight weeks after fertilization, and the fetal period lasts from eight weeks until birth.
3. Recognize the characteristics of the embryonic period: During the embryonic period, major organs and structures begin to develop, and the embryo is particularly vulnerable to environmental influences.
4. Differentiate between the terms: The germinal period involves cell division and implantation, the embryonic period involves organogenesis, and the fetal period involves growth and maturation.
5. Apply this knowledge to the question: Given the time frame of two to eight weeks after fertilization, identify the correct term as the embryonic period.