s2 is converse of s1 Study the given propositions and the statements marked Assertion and Reason…

Answer: (b) Both Assertion and Reason are true but Reason is not the correct explanation for Assertion. Given $s1: p \rightarrow q$, its converse is $q \rightarrow p$, which is exactly $s2$, so the Assertion ('s2 is the converse of s1') is true - this is a structural/definitional fact about conditionals. The Reason ('a three-sided polygon must be a triangle') is also true, but it is a fact of geometry, unrelated to why $s2$ is termed the converse of $s1$ - so it does not explain the Assertion.