What happened to your friend ??
Answer:
Heredity.
Explanation:
When genetics are passed from one generation to the next, this is heredity.
Answer:
i would say a good school system for people with social anxiety would be a school that focuses more on mental health and checks up on kids more and helps kids who are stressing out or need to calm down or need help with something (i hope this helped!)
Answer:
B. Large numbers of people with weakened immune system
C.frequent contact between patients and staff