The Problem

Statements:

• All young scientists are open-minded.
• No open-minded men are superstitious.

Conclusions:

• I. No scientist is superstitious.
• II. No young people are superstitious.

Logical Analysis

• Conclusion I (Does not follow): The statements only provide information about "young scientists." We cannot make a conclusion about all scientists (which would include older scientists), so this is an invalid generalization.
• Conclusion II (Does not follow): The statements refer to "young scientists," which is a specific subgroup of young people. We have no information about other young people (e.g., young artists, young athletes), so we cannot make a conclusion about all young people.

Final Answer: The correct option is C. Neither I nor II follows.