Statements:
1. Some actors are singers.
2. All the singers are dancers.
Show Hint
Use Venn diagrams for syllogism: if the first statement connects A and B, and the second connects B and C, you can infer a relation between A and C when there's overlap.
Step 1: Diagram the statements.
From statement 1: Some actors $\cap$ singers $\neq \emptyset$.
From statement 2: All singers $\subset$ dancers.
Step 2: Test Conclusion I.
We know some actors are singers, and all singers are dancers.
Therefore, these actors (who are singers) are also dancers.
$$ “Some actors are dancers” is true.
Step 3: Test Conclusion II.
“No singer is an actor” contradicts statement 1, which says “Some actors are singers.”
$$ Conclusion II is false.
\[
\boxed{\text{Only (a) follows — Option A}}
\]