Questions 19 to 22 are based on the conversation you have just heard.

A．To keep selling people by producing cigarettes with less tar.
B．To persuade people to give up smoking entirely.
C．To reduce the risk to people’s health.
D．To let people know the risk to people’s health.

A．Because he can protect people’s ideals.
B．Because he can straighten out any trouble.
C．Because he is brave and smart.
D．Because he is highly independent.