Answer:
(4) less than that of nitrogen and oxygen
Explanation:
The ability of an element to attract electrons to itself is called Electronegativity. In the periodic table, the trend of the electronegativity is;
Electronegativty increases as you move from left to right across the periodic table and decreases down the group.
Since carbon comes before nitrogen and oxygen in the periodic table, it means it would have a lower value compared to both of them;
The correct option is;
(4) less than that of nitrogen and oxygen