The first step is always to identify the mystery we are trying to explain. This is an Explain the Paradox question, so there is no conclusion to strengthen or weaken. Instead, we are given a surprising result and asked to identify the answer choice that makes the two facts compatible.
Before looking at the answer choices, make two observations about the result. First, the result begins with the word "Many." Many does not necessarily mean all. In fact, it does not even necessarily mean most. "Many" could refer to a relatively small portion of the senior population. Therefore, we do not need an answer that explains why every senior citizen failed to benefit from the plan. We only need an answer that explains why this happened to many of them.
Second, the phrase "no better off financially" is intentionally a little vague. Although the plan concerns a 20% increase in government pensions, whether someone is "better off financially" depends on more than just the size of that pension. A person's overall financial position depends on all sources of income as well as expenses. Thus, an increase in pension income could easily be offset by increases in expenses or by changes affecting other sources of income.
Now let's examine the choices.
Choice (A) tells us that many of the seniors who did not improve rely entirely on the government pension for their income. If anything, this makes the result more puzzling. Someone who relies exclusively on a pension would seem more likely to benefit from a 20% increase than someone who has many other sources of income. This choice does not explain the paradox.
Choice (B) says that cashing a pension check can take as long as three weeks. Although inconvenient, a delay in receiving money does not mean someone is financially no better off. They still receive the larger pension eventually. This does not resolve the discrepancy.
Choice (C) explains the paradox perfectly. The problem tells us that overall inflation has remained below 5%, but that does not mean every category of goods and services has increased in price by less than 5%. Seniors often spend a disproportionate amount of their income on medical care, prescription drugs, and other services tailored to their needs. If the prices of those particular goods and services increased much faster than overall inflation, then the additional pension income could easily be offset by higher expenses. As a result, many seniors would be no better off financially despite receiving a 20% increase in their pensions.
Choice (D) tells us that many seniors were living below the poverty level when the increase occurred. This describes the financial condition of seniors before the plan but does not explain why the pension increase failed to improve their financial position.
Choice (E) merely states that this was only the second pension increase in ten years. The frequency of past pension increases has no bearing on why many seniors were no better off after this particular increase.
The correct answer is (C) because it provides a plausible reason why a substantial increase in pension income failed to improve the financial position of many senior citizens.