Questions 4 to 7 are based on the following conversation. At the end o f the conversation,

you will be given 20 seconds to answer the questions.

Now, listen to the conversation.

According to Mr. Bacon, people keep snakes because

[A] they like them as pets.

[B] they are curious of them.

[C] they use them to frighten other people.

[D] they keep them to do research.