Answer:
C) vocal expression to enhance her credibility
Explanation:
Effective communication revolves around seven factors or characteristics, popularly known as the 7 Cs. These are:
In the current scenario, Jen is highly focused on conveying the correct, clear and complete meaning of her words. She uses simple words so everyone can understand them. She structures her sentences in a clear, concise, to the point manner so everyone hears and understands exactly what she means.
On the other hand, as she appeals to the audiences reason and logic through her arguments, she is also employing the rhetorical device of logos.