Final answer:
In standard form categorical syllogisms, none of the given options are true. The claim variable "p" can appear in any premise, the minor premise can appear in any position, and the middle term can appear as the subject, predicate, or not appear at all in the conclusion.
Step-by-step explanation:
In standard form categorical syllogisms, none of the given options are true:
- The claim variable "p" can appear in any premise, not necessarily the first listed premise.
- The minor premise can appear in any position, not necessarily listed first.
- The middle term can appear as the subject, predicate, or even not appear at all in the conclusion.
Therefore, all of the given options are false regarding standard form categorical syllogisms.