Question Detail
Question
What physiological event marks the end of the embryonic stage and beginning of the fetal stage?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The embryonic period is characterized by the formation of all major organs and structures (organogenesis). Once this is largely complete (around week 8 in humans), the developing organism is called a fetus, and the fetal period of growth and maturation begins.
Hint
It's the transition from forming organs to growing them.