Select the option that can be used as a one-word substitute for the given group of words.
A disease persisting for a long time or recurring again and again
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Chronic.
Correct word: Chronic
Meaning: A chronic disease is one that persists for a long time or recurs frequently.
Example: He has been suffering from chronic bronchitis for years.
Meaning of the other words:
Certified means officially recognized as having met certain standards or qualifications.
Confirmed means made certain or definite, verified.
Chronological means arranged in the order of time.
Hence, the chosen option will be correct.