Select the most appropriate option to substitute the underlined segment in the given sentence to make it a meaningful sentence. If no substitution is required, select ‘No substitution’.
Patients who do previous heart attacks and those with cardiac failure are at a higher risk of having a cardiac arrest.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. who have had previous heart attacks and those with cardiac failure are at a higher risk of having
- The sentence refers to patients who already have experienced heart attacks.
- "Have had" is the correct present perfect tense to indicate previous occurrences of heart attacks.
- So, the corrected sentence would be "Patients who have had previous heart attacks and those with cardiac failure are at a higher risk of having a cardiac arrest."