Question $22$ Tries remaining: $1$

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Which of the following two programs does not display anything on the screen when you run it$?$

Select one:

a$.$

def add$\_1($integer$)$:

print$($integer $+1)$

result $=$ add$\_1(1)$

b$.$

def add$\_$one$($integer$)$:

return integer $+1$

result $=$ add$\_$one $(1)$