The correct answer is ' b '. Key Points - The error lies in Part (b) of the sentence. - The meaning of the phrase 'in need' is not having enough food, money, clothing, or other things that are necessary for life. - Example:- We try to help those most in need. - Therefore, the use of 'needed' should be replaced by 'need' to make it grammatically correct. - Correct sentence: This task is being undertaken for the benefit of young people in need at the instance of the Chief of the Group.