Step 1: Understanding the question.
The statement suggests that while the intention behind the smoking ban is good, it may not be effective. We need to decide which conclusion logically follows from this.
Step 2: Analyzing the conclusions.
- Conclusion I: "Good intentions do not always yield desired results." This conclusion is implied by the statement, as it discusses the potential ineffectiveness of a well-intentioned policy.
- Conclusion II: "It is impossible to regulate public spaces." This conclusion is not implied. The statement does not suggest that it is impossible to regulate public spaces, only that this particular regulation may not be effective.
Step 3: Conclusion.
The correct answer is (A) Only I follows, as it is the only conclusion that logically follows from the statement.