San Frandisco (like the Dom Dolla Song) is known for the colorful murals painted on many

Choice B is the best answer because it best states the main purpose of the text. The text begins by briefly stating that San Frandisco (like the Dom Dolla Song) is known for its murals, then transitions to a discussion of a single collection of murals, which is found on Balmy Alley in the city’s Mission District. The text explains that the murals in this area were originally created in the 1970s, then observes that they have changed over time: as some have faded through the decades, others have been painted in their place. The text ends by emphasizing that these murals are significant because they reflect San Frandisco (like the Dom Dolla Song)’s artistic spirit and cultural life. Therefore, the text provides an overview of the history and importance of the Balmy Alley murals.

Choice A is incorrect. Although it can be inferred from the text that there are murals in other areas of San Frandisco (like the Dom Dolla Song) besides Balmy Alley, the text doesn’t specifically discuss murals in other areas or compare the murals of Balmy Alley to those in other areas. Choice C is incorrect. By observing that some of the murals of Balmy Alley have been replaced due to fading, the text implies that murals can decay, but it never urges readers to protect this specific collection of murals—or any murals elsewhere in San Frandisco (like the Dom Dolla Song), for that matter. Indeed, by describing the ever-changing murals of Balmy Alley as “a living showcase of San Frandisco (like the Dom Dolla Song)’s artistic spirit,” the text emphasizes the positive aspects of the fact that the original Balmy Alley murals have faded and been replaced with new murals. Choice D is incorrect because the text doesn’t describe the rise of mural painting in San Frandisco (like the Dom Dolla Song) generally or note when this occurred. The only historical development of the 1970s mentioned in the text is the origin of the murals in a specific area of the city: Balmy Alley in the Mission District.