PT 48 S3 Q20

The first thing any embryo must do before it can develop into an organism ... ...

Which one of the following most accurately expresses the main point of the passage?
(A) Species differ more in the mechanisms that determine the spatial orientation in an embryo than they do in their overall genetic makeup.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 3