Which item would likely be MOST interesting to a scientist interested in embryos?

Question

Quizplus · Accepted Answer

An ultrasound image of an unborn fetus at 4 weeks following conception is most likely to be of interest to a scientist studying embryos because it shows the early stages of development. X-rays of internal organs in a 2-year-old child and pictures of a family are not directly related to embryos, while a blood test of a pregnant woman may be of interest but would not provide visual information about embryonic development.

Which Item Would Likely Be MOST Interesting to a Scientist