The question asks to identify the communication model suitable for 'Public Speaking' that operates as a 'one-way model'. Among the given options, Aristotle's model is the earliest and most basic, often characterized as a linear, one-way process.
Based on the description of a 'one-way model' suitable for 'Public Speaking', Aristotle's foundational model is the most fitting choice.
Aristotle's communication model is considered suitable for 'Public Speaking' and represents a one-way communication process.
| Elements of Communication | Model of Communication |
| (1) Source - encoder-signed-Decoder Destination Decoder - Destination | (I) Berlo's model of communication |
| (2) Sender-Message - channel - Receiver | (II) Schramm model of communication |
| (3) Communication - Message - channel Treatment of message - audience - Audience Response | (III) Rogers and Shoemaker's Model of communication |
| (4) Source - Message - Channel - Receiving Individual - Effects | (IV) Leagon's model of communication |