Answer:

D

Explanation:

MODULATION

—This refers to the speaker's ability to adjust or manipulate the resonance and timbre of one's voice. This also means the fine-tuning of the pitch or tone of voice that helps the audience clearly hear and understand the lecture, presentation, and speech delivered by a speaker. Proper modulation gives life to a talk, stirs emotions, and motivates to action. Lack of modulation may give the impression that you have no real interest in your subject. Always convey your message with the variation in the pitch and tempo. Never deliver your speech in a monotone as it will not only bore but also send your audience to sleep. Speak at a rate so that your audience can understand you because fast delivery betrays a lack of confidence. Speak normally at about 125 to 150 words per minute. Check your speed and ttry to bring it within this range. Pronounce words properly, putting stresses at the right syllables. Speak loud enough so that everyone in the audience can hear you clearly. Pause for a moment in between sentences to control your speed and approach better. Refrain from vocalized pauses and nasalization such as 'er', 'ah', 'unh', 'umm', etc. Take care that you do not repeatedly use such phrases as 'you see', 'I mean', 'What I meant, 'Understand?, 'Have you understood, 'Clear?', 'Is it clear?', 'Was it clear?', etc.

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