Q2-- Right answer but were my methods correct?

What's odd is that I got the question right by treating "those who" as "people who" to invoke the sufficient condition. So my diagram is: Participate in Local Politics ---> General Interest in Public Service & Selfish Oppurtunist Participate in Local Politics ---> Interest in Community Values I did the contrapositive and break down of the first and got: GIPS or SO ---> PLP PLP--->GIPS PLP--->SO My notes say that "all" statements can be reversed to "some" assuming the sufficient exists. So I reversed both "PLP--->GIPS" and "PLP--->SO" and went through the motions and ultimately got answer I was looking for which was the right answer. Did I do too many steps?