The right option is; to develop family pedigrees and inform clients of possible options.
Genetic counselors are trained specialists and part of the health care system that determine possible risk factors of hereditary disorders in patients. They function by analyzing patient histories (pedigree), providing genetic testing and diagnosis, performing genetic risk calculations, counseling and educating patients and their families about potential health risks and available options.
The expression or comment "Brain Freeze" means that the roof of your mouth is getting so cold that its affecting some of the nerves in your brain making it feel like a brain freeze.
It depends on whatever it's real or just a simple theory. But, at times it may not be simple as it seems, because theories are often left as theories. In the near future (or even now) they'll be testing to see if theories can be proven as a fact!
Good luck!
I believe C- photosynthesis but I could be wrong.