English Language · English
Identify the option that contains a grammatical error in the given text: 'The advancement in medical science has led to a general improvement in living standards worldwide. Medical research has enabled our lives to become longer and healthy. A hundred years ago, the average life span was sixty years.'
- 1The advancement in medical science has led to a general
- 2led to a general improvement in living standards worldwide
- 3Medical research has enabled our lives to become longer and healthy.✓
- 4A hundred years ago, the average life span was sixty years
Correct answer
Medical research has enabled our lives to become longer and healthy.
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