what form can an introduction take in a single paragraph?

Question

a summary
the central idea
supporting details
a topic sentence

Answer 1

An introduction in a single paragraph typically takes the form of a topic sentence. This sentence captures the main idea or focus of the paragraph, setting the stage for the supporting details and arguments that will follow. While a summary can also serve as an introduction in some contexts, the topic sentence is fundamental for guiding the reader on what to expect in that section.