In advertisements aimed at different countries, companies sometimes use actors who do not speak, along with a voice and/or print overlay.What is the main reason for doing this?

Question

Quizplus · Accepted Answer

Using actors who do not speak allows for the voiceover to be synced with lip movements, avoiding the need for expensive dubbing.

Answer: D 
 Using actors who do not speak allows for the use of closed captioning or sign language to reach hearing- or sight-impaired audiences.

In Advertisements Aimed at Different Countries, Companies Sometimes Use Actors