This is how I diagrammed it: whoever is kind is loved by somebody or other (K->loveD) whoever loves anyone is happy (loveS->H) ---------------------------------- it follows that whoever is kind is happy (K->H)
so to arrive at the conclusion we would need to connect loveD->loveS. answer choice D is /loveS->/loveD the contrapositive of this would become loveD->loveS, exactly what we need! as for answer choice E, it would be loveS->K, but we would need K->loveS in order for this to be relevant.
Comments
whoever is kind is loved by somebody or other (K->loveD)
whoever loves anyone is happy (loveS->H)
----------------------------------
it follows that whoever is kind is happy (K->H)
so to arrive at the conclusion we would need to connect loveD->loveS.
answer choice D is /loveS->/loveD
the contrapositive of this would become loveD->loveS, exactly what we need!
as for answer choice E, it would be loveS->K, but we would need K->loveS in order for this to be relevant.