The correct option is A Errant
The correct answer here is Option A) - 'Errant'. This is because this word satisfies the rules of proper grammatical convention the best and follows the tense of the sentence as well (in this case, past). The answer is errant as it means someone who has made a mistake or has not been upto the mark, and thus he was 'pulled up' or corrected by the boss. All other options are incorrect - devious means someone with evil intentions; incorrect means wrong and erudite means someone with a lot of knowledge.