Answer:
C. 4
Step-by-step explanation:
Carbon has four electrons in its valence (outermost) electron shell. Therefore, it will form covalent bonds with four hydrogen atoms.
The answer is C. 4 Hydrogen atoms.
Four hydrogen atoms can make a bond with one carbon atom so that it is stable i.e., it attains a noble gas configuration. As in methane CH4.
Hope this helps :)
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