I believe the correct answer is the last statement: Actors’
dialogue, sound effects, and background music.
Actors’ dialogue, sound effects, and background music make
up a film’s soundtrack during the post-production process. Audio
post-production is general term for all the stages of production from actual
recording to completion of a master recording which involves sound design,
sound editing, audio mixing, and the addition of effects. Sometimes the
original dialogs lacks in performance or quality, and the actor is brought into
a sound studio to record again. The foley, music, and voiceover, are also added
during post production.
The increased popularity of music video had a clear impact
on society. It was both positive and negative. They impacted different venues
like radio in a way that they were left redundant. Nobody wanted to listen to
the music when they could watch it. Radio people had to work very hard regain
their space in the industry. These music videos impacted different segments of
society differently. Some of these videos were very nice and impacted all the
segments positively, while others were
declared immoral and unsafe for a particular age group or the whole society.
Inference is evidence. So you would have to show evidence from the text or what ever you are studying.
Hope this helps!