Answer: Rivest Cipher 4(RC4)
Explanation: TKIP(Temporal Key Integrity Protocol) is the protocol that is used for the encryption with the security . It is made to provide better service of encryption than WEP(Wired Equivalent Privacy). RC4 encryption is secure and more reliable. It encrypts the information in the form of data packets in respect with unique key of encryption.Therefore option (b) is the correct option.