Question

for a long time, playgrounds remained the same. then, in the 1960s, adventure playgrounds were introduced. community volunteers built these playgrounds with left-over construction materials, such as wood, rope, and concrete. the playgrounds featured unique climbing structures, tunnels, bridges, and tire swings. you can still visit this adventure playground in new york’s central park. why does the author discuss different playground equipment in the section \from strides to slides\? options: to persuade more volunteers to build playgrounds; to compare playgrounds in different places; to tell how playgrounds changed over time; to explain how the playground equipment worked

Explanation:

The text says playgrounds were same for long, then adventure playgrounds were introduced in 1960s with new equipment. The section "From Strides to Slides" likely discusses this change over time. The first option is about persuading volunteers (no persuasion in text), second about comparing places (text doesn't compare places), fourth about how equipment worked (text describes equipment but not how it works). So the purpose is to tell how playgrounds changed over time.

Answer:

to tell how playgrounds changed over time