听力原文：Welcome, everyone, and thank you for visiting Greenfield Botanical Garden. My nam

听力原文： Welcome, everyone, and thank you for visiting Greenfield Botanical Garden. My name is Victor, and I'll be your guide for today. This garden was once a garden that belonged to Ms. Mary Whiten, who was the wife to the first governor of the state, the Honorable James Whiten. Then through numerous neighboring acquisitions throughout the history of the garden's 112-year-old life, it has quadrupled in size. With an increase in international trade, flowers, herbs, and other exotic plants were added to the extensive list of displays, including the Japanese June plant, the Chinese fern, and the African scarlet rose. Finally, ten years ago, this garden was officially recognized as a historical site with a tribute paid to Ms. Mary Whiten's efforts to preserve some of our country's most distinctive and rare breeds of plants.

What are the listeners doing？

A．Receiving tips about gardening.

B．Taking a tour of a historic site.

C．Learning about the governor.

D．Buying exotic plants.