By respectfully asking for desired medications or procedures and providing explanation as to why you need such services or products. Also, by declining recommendations of certain methods due to personal or religious reasons
Artificial methods in common use include preventing the sperm from reaching the ovum (using condoms, diaphragms, etc), inhibiting ovulation (using oral contraceptive pills), preventing implantation (using intrauterine devices), killing the sperm (using spermicides)
In your behind and your corestoral
Answer:
the last one, Underwater weighing
I would say A. Because c and d r very dangerous if u think about it. And b is right in some situations. But if u do a then people can see whts going on if something happened because of the light. and it is safe. If wrong let me know. :D