Answer:
The early central nervous system begins as a simple neural plate that folds to form a neural groove and then neural tube.
Explanation:
https://embryology.med.unsw.edu.au/embryology/index.php/Neural_System_Development
The correct answer is D. Avoiding high-risk situations
A could lead to a possible sexual encounter. B would just lead to confrontation. C is just dumb and would lead to potentially putting yourself in harms way.
If you avoid high risk situations where the chances of a sexual encounter are high you are more than likely able to successfully remain abstinent.
Toxic chemicals are mostly found in waste sites where they dump old chemicals and with that, that could cause health problems because they could either dump it into the oceans where the life is or they will burn it causing pollution.
Hope this helped :)<span />
They can make you feel stressed and or sad.