The error lies in part B, Hence option 2 is correct. Key Points 'only' should be placed before 'few opponents' in order to qualify the opponents rather than the verb 'voted'. You use only to emphasize that you are talking about a small part of an amount or group, not the whole of it. Example: These are only a few of the possibilities. ​Additional Information Consent: If you give your consent to something, you give someone permission to do it. Few is a quantifier used with plural countable nouns. Without the article “a,” few emphasizes a small number of something. Adding the article removes the emphasis—a few means some. Since we are referring to a small number, the consent will be given only when the number of people approving it is less. The correct sentence All the members of Lok Sabha gave their consent to the act, only a few opponents voted against it.