The correct answer is: "3 (THREE)" .
_______________________________________
"HONC "
1 2 3 4
_______________________________________
In which "H" is the symbol for the element "hydrogen" ;
"O" is the symbol for the element "oxygen" ;
"N" is the symbol for the element "nitrogen" ;
"C" is the symbol for the element "carbon"
____________________________________________
And the number of bonds formed:
1, (for "H"); 2 (for "O"); 3 (for "N"); and 4 (for "C") .
____________________________________________