Answer : The correct option is, it can form four covalent bonds.
Explanation :
Carbon is a non-metal that belongs to group 14 and period 2. The atomic number of carbon is, 6.
The electronic configuration of carbon is, [tex]1s^22s^22p^2[/tex]
That means, carbon has 4 valence electrons. So, carbon can bond with another carbon atoms by sharing a maximum of four electrons and carbon can also bond with another different elements by sharing a maximum of four electrons.
And, carbon can also form single, double, or triple bonds with another carbon atom.
Hence, the correct statement is, it can form four covalent bonds.
