To achieve economic development, people should work hard; based on this, which of the given conclusions about development and hard work logically follows?

Introduction / Context:
This reasoning question connects economic development with people's hard work. You must determine which conclusion is directly supported by the given statement when it is treated as true.

Given Data / Assumptions:

• Statement: To achieve economic development, people should work hard.
• Conclusion I: Economic development is directly related to people's hard work.
• Conclusion II: Working hard by all the people is impossible.
• No further information about feasibility or other factors is provided.

Concept / Approach:
The statement sets up a necessary condition: for economic development to happen, hard work by people is required. This means there is a direct connection between development and hard work. However, the statement does not discuss whether hard work by all people is practically possible or impossible, so we cannot conclude that part.

Step-by-Step Solution:
Step 1: The expression to achieve economic development, people should work hard indicates that hard work is required for development. Step 2: This clearly supports the idea that there is a direct relationship between economic development and hard work of people. If people do not work hard, development is unlikely. Step 3: Conclusion I restates this as economic development is directly related to people's hard work, which matches the essence of the statement. Step 4: Conclusion II claims that it is impossible for all people to work hard. The original statement does not talk about possibility or impossibility of everyone working hard; it only advises that they should do so. Step 5: Therefore conclusion II goes beyond the given information and does not follow.

Verification / Alternative check:
Consider two situations. In one, many people work hard and development is achieved. In another, many people are lazy and development is slow. Both situations are consistent with the idea that hard work is important for development. Neither case proves that it is impossible for everyone to work hard. The statement is a prescription, not a claim about impossibility.

Why Other Options Are Wrong:
Option B chooses only conclusion II, which is unsupported. Option C says both follow, wrongly including the stronger claim about impossibility. Option D says neither follows, which ignores the clear link between development and hard work stated in the problem. Option E proposes an either or condition that is not relevant here, since exactly one conclusion follows.

Common Pitfalls:
A common error is to assume that an obligation (people should work hard) automatically implies impossibility (people cannot all work hard). These are very different ideas. Another pitfall is to overlook direct restatements of the given condition, such as conclusion I, which is precisely what the original sentence suggests.

Final Answer:
The correct evaluation is that only conclusion I follows from the given statement.