In the following questions, four words in the sentence

Solution

The phrase “undermined spread of digital misinformation” is incorrect because misinformation is not undermined; rather, it is unchecked or uncontrolled. Similarly, “unchecked institutional credibility” is illogical because credibility is something that gets undermined, not left unchecked. Therefore, “undermined” (A) and “unchecked” (C) must be interchanged to restore meaning. Next, the phrase “polarised social divisions” is redundant and semantically weak because divisions are already polarised by definition. What misinformation actually polarises is public discourse, while divisions tend to become amplified. Hence, “polarised” (B) and “amplified” (D) must be interchanged. After both interchanges, the corrected sentence becomes: The unchecked spread of digital misinformation has amplified social divisions and undermined institutional credibility, rendering public discourse increasingly polarised and fragmented.