A、To investigate whether people are grateful for help. B、To see whether people hold doors open for strangers. C、To explore ways

A man in Halifax, Canada, wanted to find out if people were thankful for someone holding the door open for them. The social experiment showed that 99 out of 100 people expressed gratitude. “I didn’t think we were going to get 99. I don’t know why, but I was pleasantly surprised because it went beyond just ‘thank you.’ People got into conversations with us,” said Steve Foran, CEO of Gratitude at Work. “What we know from research is that from grateful people come good things,” he said. “A simple way to induce gratitude in people is opening doors and so we went to six places and opened the doors for people.” For the experiment, Foran’s team went to a shopping center, a mall, two office buildings, and a coffee shop. The door was held for 15 to 20 people at a time at each location. “We did have one that didn’t say thank you. We’re not here to judge them because on any given day, that could be me or you. I suspect out of the 100 people, there were probably a bunch of them having a bad day, but grateful people make people grateful,” said Foran.
Questions 5 to 7 are based on the news report you have just heard.
5. What is the purpose of the social experiment?
6. What did Steve Foran and his team do in the experiment?
7. What do we learn from the news report?