You want to decrease your risk of developing an infectious disease. which of the fallowing factors can you control?

a] heredity
b] nutritional status
c] environmental conditions
d] age

Lori didn't want to learn the piano and thought her mom was wasting money on lessons. lori didn't like practicing and saw no future purpose for learning the piano since she wasn't going to grow up to be a pianist. what is lori expressing?

Can someone give me a hand with this one.

What else happens in your cardiovascular system in response to your sympathetic nervous system? why might your blood vessels need to expand to accommodate this?