Read these sentences from a concluding paragraph. 1. The Gupta period in India produced many cultural and academic advancements.

2. Gupta architecture, sculpture, and painting influenced artists not only in India but far beyond its borders.

3. Strong trade ties made India an important cultural center that influenced nearby countries.

Which statement best describes the purpose of sentence 3?

It introduces a specific topic.
It summarizes the main ideas of the essay.
It introduces a topic with an engaging hook.
It introduces a topic with an engaging hook.