Concept:Use syllogism rules to test each conclusion against the given statements.
Explanation:Statements: All engineers are smart. Some smart people are creative. No creative person is dull.
Conclusion 1: Some smart people are not dull. Since some smart are creative, and creative are never dull, those smart people are definitely not dull. Hence it follows.
Conclusion 2: Some engineers are creative. All engineers are smart, but creative is only a part of smart. This is possible but not guaranteed. So it does not follow.
Conclusion 3: Some dull people are smart. No creative person is dull, and some smart are creative, so those smart are not dull. But no definite link between dull and smart exists. Hence it does not follow.
Conclusion 4: No engineer is dull. Engineers are smart, but smart includes both creative and non-creative. Only creative are definitely not dull; non-creative smart people could be dull. No direct relation given, so it does not follow.
Only conclusion 1 logically follows.
Answer:Only (1) follow. Option A.
