Question

review the details below.

• surfing, popular in pre - colonial hawaii, was used to attract tourists visiting waikiki beach in the early twentieth century.
• the first surfboards were made of solid wood, but in the 1930s, american tom blake developed a cheaper, lighter version that attracted new surfers.
• hawaiian surfers george freeth and duke kahanamoku helped establish the sport in california, australia, and new zealand.

choose the best topic sentence to introduce a paragraph containing these details.
surfing had limited widespread appeal until hawaiian surfers helped popularize the sport.
a number of factors influenced the spread of surfings popularity in the early twentieth century.
although once limited to a few areas, surfers have found excellent surfing conditions all over the world.

Explanation:

The details discuss how surfing was used to attract tourists (a factor), the development of a better surfboard (another factor), and Hawaiian surfers spreading the sport (a third factor) in the early 20th century. The second option, "A number of factors influenced the spread of surfing's popularity in the early twentieth century," encompasses these multiple factors. The first option focuses only on Hawaiian surfers, and the third is about surfing conditions, not popularity spread factors.

Answer:

B. A number of factors influenced the spread of surfing's popularity in the early twentieth century.