Answer:
B: Most of the passage explains how to float, tread water, and swim.
Step-by-step explanation:
The passage discusses different techniques related to swimming, such as how to float, how to tread water, and how to swim. Most of the text is dedicated to providing instructions and tips on how to master these techniques. The first paragraph emphasizes the importance of swimming as a fun activity and a great way to exercise the whole body. The subsequent paragraphs provide step-by-step instructions on how to float, tread water, and swim. The final paragraph briefly mentions the need to learn different swimming strokes in order to become a strong swimmer and enjoy various water activities. However, the majority of the passage focuses on the basics of swimming and techniques that are helpful for beginners. Therefore, option B, "Most of the passage explains how to float, tread water, and swim," is the most accurate description of the passage.