Which of the following details is MOST important to the development of the main idea?
(A)
(B)
(C)
(D)
Those who took part in the study were 40 to 80 years old and were followed for up to 12 years. Just
over 13 percent had pet dogs.
"We see effects in the single households that are much stronger than in multiple-person households,"
she said. "If you have a dog, you neutralize the effects of living alone."
The estimated 1.1 million lonely people in Britain are 50 percent more likely to die prematurely than
those with good social networks. Based on those numbers, loneliness is as harmful to the nation's
health as diabetes.
In previous research, she showed that having a pet dog reduced a child's risk of asthma by 15 percent.
This finding lends support to the "hygiene hypothesis," which suggests that living in too clean an
environment can increase susceptibility to allergies.