Let the four variables be a< b< c< d.

Assume a worst case scenario where the a equal to a prime number (hence odd).

therefore

a = divisible by 1

b = a + 1 (divisible by 2)

c = a + 3 (divisible by 3)

d = a + 4 (divisible by 4)

therefore

each answer choice must be divisible by 2 x 3 x 4 = 24

only 80 is not divisible. Therefore answer = D

stonecold wrote:

Which of these must the factor of the product of four consecutive even integers:-

1) 48

2) 64

3) 96

4) 192

5) 80

A) 1,2 only

B) 2,3 only

C) 1,2,3 only

D) 1,2,3,4 only

E) All of them