阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题纸上将该选项标号涂黑。
A
Every person leaves a footprint. That’s what I learnt when I started to work as a private investigator 10 years ago. People pay restaurant bills with their bank card, check into hotels or travel around. In every case, they leave a trace. And because of this, I’m able to track them down even when they don’t want to be found.
The first thing I do when I want to find out where someone is staying is to go to the neighbourhood where he used to live. It’s human nature to tell stories — which is why neighbours will tell me all they know when I ring at their houses. Sometimes, someone even talks about his friend’s dishonesty. Then I produce a pattern of my subject’s life: if he likes to have a holiday in Spain or in Italy, if he prefers two- or three-star hotels and where he might hide his assets(资产) . When I’ve got this life pattern, I start my research.
Nine times out of 10, I find the people I’m looking for. I once investigated a lorry supplier who owed £500,000 to a subcontractor(分包商). The subcontractor wanted to find out if it was
