Purposes of speeches: informative

Read the following scenario and answer the question below. sarah is a local politician running for a seat on the city council. she is preparing a speech she will give tomorrow to a group consisting of senior citizens and members of the pta (parents teachers association). she is hoping her speech will increase support for her campaign. if the purpose of sara's speech is to increase support for her campaign, which of the following options best summarizes her controlling idea (or argument)? a. you should vote for me. b. you should support me financially. c. you should not waste your time voting. d. you should not support anyone but me.