Question

grammar passage
music and prosocial skills
throughout history, some form of music has been evident in all human cultures. tightly knit social groups with greater levels of sympathy, helping behaviors, altruism, and so on, are thought to have an increased likelihood of warding off threats. one might expect that music making enhances children’s cooperative, prosocial behaviors, such as voluntary actions that benefit others. evolutionary theorists posit that music may be an adaptation because it facilitates social cohesion.

developmental research has focused mostly on associations between music lessons and cognitive abilities. music training in childhood has positive associations with abilities in a variety of domains, including language, visual - spatial abilities, and more general abilities such as memory, executive functioning, intelligence, and academic achievement.

hint: most act english questions can be answered by looking at the referenced sentence without reading the whole passage
question 2/5
this question refers to 2
choose the option that best improves the underlined portion of the sentence.
a no change
b , donating to charities,
c --donating to charities--
d , donating to charities,

Explanation:

To solve this, we analyze the context of the underlined portion (though the underlined part isn't fully shown, we assume it's about a parenthetical or explanatory phrase for prosocial behaviors like "donating to charities"). We check punctuation and structure:

• Option A ("NO CHANGE") is invalid if the original has an error.
• Option B: A comma after the phrase (if the original structure needs a comma - separated example) is correct for a non - restrictive, explanatory example of a prosocial behavior.
• Option C: En dashes are incorrect here as they're not used for simple examples.
• Option D: The extra comma at the end is incorrect.

So the best option is B.

Analizamos la puntuación y el contexto. La opción B usa una coma correctamente para presentar un ejemplo de comportamiento prosocial (donating to charities) de manera no restrictiva, mientras que C usa guiones incorrectos y D tiene una coma de más. A no es válido si la estructura original tiene error.

Answer:

B. donating to charities,