Concept:Identify the grammatical error in the underlined parts of the sentence.Explanation:The sentence structure is correct except for part (c).The phrase "to be update" is incorrect because the verb "update" should be in the past participle form "updated" after the verb "be".The correct phrase is "to be updated with current affairs".Parts (a) "You should" and (b) "read the newspaper regularly" have no errors.Thus, the error lies in part (c).Answer:(c)