Statements: All cats are dogs. All wolves are dogs. All dogs are jackals. Conclusions I: All wolves are jackals. Conclusion II: Atleast some jackals are cats.

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Step-by-step reasoning:

1. Represent sets: let $C$ = cats, $D$ = dogs, $W$ = wolves, $J$ = jackals.
2. From the statements:
   - All cats are dogs: $C\subseteq D$.
   - All wolves are dogs: $W\subseteq D$.
   - All dogs are jackals: $D\subseteq J$.
3. By transitivity of inclusion: from $C\subseteq D$ and $D\subseteq J$ we get $C\subseteq J$. Similarly, from $W\subseteq D$ and $D\subseteq J$ we get $W\subseteq J$.
4. Conclusion I: "All wolves are jackals." This follows directly because $W\subseteq J$.
5. Conclusion II: "Atleast some jackals are cats." Since $C\subseteq J$, every cat is a jackal; therefore the (existing) cats are jackals, so at least some jackals are cats.

Both conclusions I and II follow from the given statements. FINAL_ANSWER: d

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