Correct option is C
The part with the error is
(c) what you says.
Explanation: The verb "says" is incorrect because "you" is a subject that takes the base form of the verb, so "say" should be used.
·
Says is used with third-person singular subjects like "he," "she," or "it."
·
Say is the correct form with "you."
Corrected sentence: "Kids are always watching what you do and ignore what you
say."