This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
Embryonic phase of development is from - 
Select and explain. 
A. 1-3 weeks, B. 4th to 8th week, C. 0-4thweek, D. 6th to 9th week
B: 4th to 8th week
Answer: B: 4th to 8th week 
Explanation: Ans. is 'b' i.e., 4th to 8th week * The development of a new individual in the uterus involves three phasesi) Pre-embro phase or germinal phase (day 0-3 weeks).ii) Embro phase or embryonic period (weeks 4-8).iii) Fetal phase (weeks 8-38).