How many lives were saved since 1973 up to January 2001?

• A. 1500 lives
• B. 2500 lives
• C. 3500 lives
• D. 4500 lives

Answer: (B)

The main idea here is interpreting a cumulative impact over a defined period. When a question asks how many lives were saved since a start year up to a specific end date, it’s about the total count accumulated over that span, not a rate or an annual figure.

So, you’re looking for the total lives saved from 1973 through January 2001. That figure is a single cumulative number, reflecting all the saving effects of the relevant safety measures, programs, or interventions during that time. In the material you’re using, the total lives saved over this period is 2500. This means that, according to the cited source, 2500 lives were saved in that timeframe.

If you were given year-by-year data, you would add each year’s lives saved from 1973 through 2000 and include January 2001 as appropriate to get the same cumulative total. The other numbers would only fit if the source data reported different totals for that period.

In short, 2500 represents the complete count of lives saved from 1973 up to January 2001 according to the referenced material.