Correct option is C
In the sentence "The news regarding the earthquake survivors are very disturbing," the error is in part C with verb agreement.
• "News" is a singular noun despite ending in -s, and it should therefore take a singular verb.
• "Are" should be corrected to "is" to match the singular noun "news."
• The corrected sentence should read, "The news regarding the earthquake survivors is very disturbing," ensuring correct subject-verb agreement where "news" is treated as a singular noun.