He faces obstacles such as the Cyclops, Scylla and Charybdis, and the Sirens.
The correct answer is language barrier.
If people are ignored because of their inability to speak standard English, they have just encountered a language barrier. It is a kind of noise in communication. When there is a language barrier, there could be a difficulty in communication. I hope this answer helped you.
A proper adjective does not start capitalized
Answer:
most books written by Charles Dickens