Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 29 to 33.

Crime, as we are all aware, has been a growing problem all over the world in the last thirty years. But we are not ______(29) against crime. Much is being done to reverse the trend. You can play a part in it. The first step towards preventing crime is understanding its nature. Most crime is against property, not ______(30) and most is not carried out by professionals; nor is it carefully planned. Property crime ______(31) on the easy opportunity. They are often committed by adolescents and young men, the majority of whom stop offending as they grow older – the ______(32) age for offending is fifteen. Also, and not surprisingly, the risk of being a victim of crime varies greatly depending on where you live. This ______(33) by criminals on the easy opportunity is the key to much crime prevention.