human
Question: Hong Kong has about 40 public  beaches.  Some of the beaches are among the best in the world. People can go there for a swim. You can go to most of them by bus. To go to some beaches, you must take a boat. There are toilets, changing rooms and places to buy food and drink on most of the beaches. You will swim there without danger if you remember these instructions: 1. Never swim alone. 2. Never swim after a meal or when feel hungry or tired. 3. Do not stay in the water too long. 4. Never go out in a boat if you cannot swim. Remember: A red flag   means that it is dangerous for anybody to go into the water. A blue flag means that it is dangerous for children. The passage mainly tells us   _   in Hong Kong.

Choices:
A) the public beaches and swimming
B) the danger of swimming
C) the best beaches
D) the difficulties to go swimming
gpt
The correct answer is 0: the public beaches and swimming.