Answer:
B). False.
Step-by-step explanation:
The given statement would be characterized as false as an effective speaker is required to be ethically responsible as it is demonstrated as one of the most significant attributes to be displayed by the speaker in order to establish the credibility of their claim. They must present the information objectively with complete integrity displayed through appropriate citation(acknowledgement) of the sources referred and the adoption of an inclusive and collective approach. Therefore, along with the practical efficacy, ethical responsibility is one of the most pre-requisite characteristics to be displayed by a public speaker while delivering a speech to persuade the readers and evoke the desired response from them. Hence, the assertion is false.