Solution
✅ Correct Option: 4
The passage begins with the rise in knee problems linked to lifestyle factors and then gives ways to reduce the risk, including healthy body weight, stronger leg muscles, proper exercise, stretching, early consultation and preventive care. Its central idea is therefore that lifestyle-linked knee problems can be reduced through awareness and prevention. Option 1 is wrong because the passage does not blame healthcare institutions. Option 2 is wrong because it does not say meniscus injuries are largely irreversible. Option 3 is wrong because the passage says knee problems are “no longer limited to athletes or elderly individuals”. Option 4 is right because it captures both the cause discussed and the preventive message of the passage.