The correct option is B 7 is not greater than 8.
Given statement: "7 is greater than 8"
Let p: 7 is greater than 8.
Negation of a statement conveys the opposite meaning.
Hence following can be negation of p
1. ~p: 7 is not greater than 8.
2. ~p: It is not the case that 7 is greater than 8.
3. ~p: It is false that 7 is greater than 8.
∴ From the given options, option (B) is correct.