At the beginning of the 20th century, the major cause of child ...

[hubes95]

At the beginning of the 20th century, the major cause of child mortality for children aged 1 to 19 was:
 
  a. farm accidents c. infectious diseases
  b. firearms d. industrial accidents

Question 2

Psychosocial reasons for the increase in incidence of sexually transmitted diseases in the teen population include:
 
  a. Teens are marrying earlier
  b. Teens are maturing later
  c. Teens tend to have one sexual partner
  d. Teens are having intercourse at a younger age

[mceravolo]

Answer to Question 1

C

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A Incorrect: America has become increasingly urbanized over the 20th century with only a fraction of children being raised on a farm.
B Incorrect: City life has reduced children's exposure to firearms as compared to living on the farm.
C Correct: At the beginning of the 20th century, people moved from the farms into the cities. As a result we live in closer and more crowded quarters, providing easy transmission for infectious diseases.
D Incorrect: Child labor laws were enacted and enforced in the late 19th century.

Answer to Question 2

D
Teens have an increase in the rate of STDs because they marry at an older age, their bodies mature earlier than in the past, and they tend to have multiple partners. Teens are also having intercourse at a younger age.