What is the most popular method of birth control among married couples in the U.S.?
a. condom
b. birth control pill
c. sterilization
d. fertility awareness
e. diaphragm
Question 2
Which medical condition may develop or worsen when pollutants constrict the bronchial tubes and destroy the air sacs in the lungs, making breathing more difficult?
a. emphysema
b. pneumonia
c. bronchitis
d. asthma
e. angina