<p>Many communities in my state are forming neighborhood watch programs, for it will deter criminals</p>
<p>a) programs, for it will deter
b) programs, in which it will deter
c) programs that will deter
d) programs for the deterrence of
e) programs being able to deter</p>
<p>C is the answer. I agree that it does sound the best, but I do not see anything grammatically wrong with choice A or D or E.</p>