Which statement is true about jazz?

Radio enabled jazz to spread to a wider audience.
Jazz was mainly influenced by ranchera.
Radio led to the decrease in popularity of jazz.
The main center of jazz moved from New York to California.

The statement "Radio enabled jazz to spread to a wider audience" is true about jazz.

The statement that is true about jazz is:

Radio enabled jazz to spread to a wider audience.

To determine which statement is true about jazz, we can analyze each option:

1. Radio enabled jazz to spread to a wider audience.
This statement is true. In the early 20th century, the rise of radio broadcasting played a pivotal role in popularizing jazz. The accessibility of radio allowed jazz music to reach a broader audience, contributing to its widespread recognition.

2. Jazz was mainly influenced by ranchera.
This statement is not true. Ranchera is a traditional genre of Mexican music, while jazz originated in the African-American communities of New Orleans. Jazz was primarily influenced by various musical traditions, including African rhythms, European classical music, and African-American spirituals.

3. Radio led to the decrease in popularity of jazz.
This statement is not true. While it is true that jazz's popularity fluctuated over the years, radio did not lead to jazz's decline. Other factors, such as the emergence of rock and roll in the 1950s, changing musical tastes, and social shifts, played a more significant role in jazz's decline in mainstream popularity.

4. The main center of jazz moved from New York to California.
This statement is not true. New York City has historically been considered the main center of jazz in the United States. It is home to renowned jazz venues, influential jazz musicians, and a thriving jazz scene. While California has had its own vibrant jazz scene, New York has consistently remained the primary hub for jazz.

Therefore, the only true statement about jazz from the provided options is: "Radio enabled jazz to spread to a wider audience."