Which of the following represents an increase in living stan

Which of the following represents an increase in living standards over the past century? Check all that apply.

Medical breakthroughs allow people to enjoy better healthcare nowadays.

Increased human activities have magnified the pollution of air and water.

The purchasing power of a dollar has declined over time due to inflation.

Solution

Increased medical Breakthrough allow people to enjoy better healthcare now a days which increases the life expectancy along with hogher stabdard of living.

Increased human activities increases GdP which increases standard of living but side by side it also increases pollution of air and water which degraded life thus lowers the standard of living.

Inflation leads to worsening of dollar or decreasing purchasing power which decreases no. Of commodites per dollar or decreases standard of living.

Thus only factor which will definitely increases standard of living is A