during his presentation, kent said the following: \and, like, um, the vietnam war affected, you know…

during his presentation, kent said the following: \and, like, um, the vietnam war affected, you know, american society, in, ah, many ways.\ how could kent have improved his presentation? by avoiding slang by avoiding filler words by speaking slower by making eye contact
Answer
Brief Explanations:
Kent's speech has filler words like "like", "um", "you know", "ah". Filler words reduce clarity. Avoiding them (option "by avoiding filler words") improves the presentation. Other options: Slang isn't present, speaking slower/eye contact not related to these fillers.
Answer:
by avoiding filler words