Question

The average life expectancy in the 21st century is about 75 years. The average life expectancy in the 19th century was about 40 years. What is a possible explanation for the longer life expectancy in the present age?

A. Advances in medical technology enable people to live longer.
B. Knowledge abut how basic cleanliness can help avoid lines has enable people to live longer.
C. The creation of various vaccines has enable people to live longer.
D. All of the statements above offer reasonable explanations for longer life expectancy.

Answer 1

Advances in medical technology, knowledge about basic cleanliness, and creation of vaccines are possible explanations for longer life expectancy.

Step-by-step explanation:

One possible explanation for the longer life expectancy in the present age is advances in medical technology. Medical advancements have led to improved treatments, procedures, and medications that can help prevent and manage diseases, resulting in longer lifespans. Another possible explanation is the knowledge about basic cleanliness and hygiene practices that can help avoid diseases. This includes practices such as handwashing, proper sanitation, and access to clean water. Additionally, the creation and widespread use of vaccines have played a significant role in increasing life expectancy by preventing and minimizing the impact of infectious diseases.