The exact mechanism of immune complex formation is unknown.
I would say B, as both A and D are obviously incorrect and stress can be a natural part of life as long as it does not dominate you.
False because body tissue isn't exactly joined right to your organs I think??
Hiccups are caused by not having enough air. Scaring some one causes them to take a deep breath getting more air and stopping the hiccups. Not 100% sure that's right though.
The answer is e. Pregnancy because human chronic gonadotropin in the urine is only produced during pregnancy.
