This is Part 6 of Reading and Use of English: four short texts by different writers on the same topic, for example four reviews of one book. Then you answer four questions about their opinions.
The questions ask you to compare the writers: which one shares another's view on a point, or which one sees it differently from the others. You need each writer's position on every aspect of the topic, not just their general attitude.
As you read, note each writer's position on every point the questions mention, in two or three words: 'positive, long-term', 'doubts the benefits'. A small grid of writers and points makes the comparisons much quicker.
Every question has a point and a relationship: shares a view, agrees with, differs from, or holds a different opinion from the others. Underline both. 'Which writer shares B's view on cost?' is only about cost, not about everything B thinks.
When a question names a writer, that writer can't be the answer. First pin down exactly what the named writer thinks about the point, then look for the one other writer who clearly agrees or clearly disagrees.
Two writers can mention the same fact and still disagree about it. Separate what writers report from what they think, and pay attention to attitude signals such as 'admittedly', 'there is little evidence that' or 'I remain unconvinced'.
For a question about the writer who differs from the others, check all four on that point. The answer is the only writer whose view clashes with the other three, so if two seem different, one of them isn't really disagreeing.
Outside the exam, read texts where people disagree: opinion columns, several reviews of one film, readers' comments under an article. Practise summing up each view in one line; that's exactly the skill this part rewards.