Correct option is C
Given:
Number = 6484y6.
Concept used:
Any number is divisible by 8 if
Last three digits divisible by 8.
Solution:
Checking from the option
Last three digit of the number 4y6.
putting y from the option;
476, 436, 416, 446:
only 416 divisible by 8
Thus, Option(c) y = 1 is correct