Explanation:

- 6 : 232

The pattern from 6 to 232 is as follows:

$6^3+2^3=216+16=232$

- 8 : ?

Apply the same pattern:

$8^3+2^3=512+16=528$

- 10 : 1016

The pattern holds:

${10}^3+2^3=1000+16=1016$

- Evaluate options for the expression 8 : ?:

- Option 1, 520: Incorrect, doesn’t match pattern

- Option 2, 535: Incorrect, doesn’t match pattern

- Option 3, 540: Incorrect, doesn’t match pattern

- Option 4, 528: Correct, matches pattern