Answer:
The correct answer is B, a light meal is eaten.
Step-by-step explanation:
According to the text, the ceremony has two parts: in the first one, the guests are accommodated in the tea house and served a light meal. In the second, the tea is carefully prepared, first the thick tea (koicha) and later the thin tea (usucha).
The tea is an old Chinese tradition that dates back to the 9th century. First for medical reasons and later for pleasure reasons, it transformed into ceremonials of hospitality like the one in the text.