The correct answer is A) fillers.
Malcolm said "um" or "uh" every time he got to a new PowerPoint slide in his informative speech. His instructor told Malcolm to reduce the number of vocalized pauses in his next speech.
The other options of the question were B) vocal inflections. C) intonations. D) vocalized pauses. E) inflections.
This is a common mistake when people speak, and a terrible mistake when professional speakers address an audience. For public speaking or in your daily life, it should be good to avoid these fillers such as "you know," "um," "uh," "ah," "you see," and many others.
The recommendation to avoid these filers is to make a pause, take a deep breath while you trying to remember the correct word to use.