One way that campaign workers communicate information during a campaign is by

a. making speeches.
b. canvassing a neighborhood.
c. donating money.
d. volunteering at the polls.

One way that campaign workers communicate information during a campaign is by A. A. making speeches.  In this fast paced world today, campaign can be brought about in social media which is faster and has a larger extent compared to other campaign techniques such as conferences or ralllies