Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Which statement explains why a mother's unhealthy diet during pregnancy is harmful to her embryo's development?
A mother's unhealthy diet during pregnancy can negatively impact her embryo's development due to the transfer of nutrients and