Question

A topical paragraph is one that _____.

is organized around a topic sentence
contains a different perspective
adheres to the purpose of the writing
describes a quality in detail

Answer 1

A topical paragraph is a paragraph that is organized around a particular topic sentence.

Answer 2

A topical paragraph is one that is organized around a topic sentence.
That answer is the only one which makes any sense - if it is a topical paragraph, it means that it revolves around a certain topic. And a topic sentence is the summary of a paragraph, or the topic of a paragraph.