Question 303134
Positive solution: {{{n+1<4}}}
{{{n<3}}}
n=0,1,2
.
.
.
Negative solution:{{{-(n+1)<4}}}
{{{n+1>-4}}}
{{{n>-5}}}
n=-4,-3,-2,-1
.
.
.
So then the total number of integers would be 7. 

D) is the correct answer.