Final answer:
The correct answer is 8. An IPv6 address is divided into 8 groups of 4 hexadecimal digits, separated by colons.
Step-by-step explanation:
The correct answer is a) 8.
When representing an IPv6 address, it is divided into 8 groups of 4 hexadecimal digits, separated by colons. Each group represents 16 bits, giving a total of 128 bits for the entire address. So, there are 8 groups in an IPv6 address.