Televised speeches, political commercials, interviews, and photo opportunities are used by candidates for public office to do all of the following except:
a.
research public opinion on issues
b.
campaign for office
c.
communicate with voters
d.
keep constituents informed

Televised speeches, political commercials, interviews and photo opportunities are used by candidates for public office for campaign, informing constituents and communicating with the voters. The purpose does not include Letter A. Research public opinion on issues. The candidates' purpose is to only keep the public informed and how well they do, to deserve such position.