Question

question 17 (3 points)
which scientific advancement has had the most profound effect on human life expectancy?

a gene therapy
b antibiotics
c x - ray machines
d heart transplants

question 18 (3 points)
in analyzing recent economic data, which statistical trend has had the most significant impact on global markets in
the past year?

a tourism recovery
b cryptocurrency fluctuations
c rising interest rates
d agricultural production

Explanation:

Question 17

Antibiotics (option b) revolutionized medicine by combating bacterial infections, which were a major cause of death historically. Gene therapy is newer and less widespread, X - ray machines are diagnostic (not as impactful on mortality reduction), and heart transplants help specific patients but are not as broadly impactful on overall life expectancy as antibiotics.

Rising interest rates (option c) impact global markets significantly. They affect borrowing costs, investment, currency values, and economic activity across sectors. Tourism recovery is sector - specific, cryptocurrency fluctuations are more niche, and agricultural production is a single - sector factor, while interest rates have a broad, macro - economic impact.

Answer:

b. Antibiotics

Question 18