Unity - the idea being discussed must focus solely on a single idea, point, or argument
Coherence - the content is in a logical manner with consistent point of view, verb tense and number. Transitional words are used between sentences and paragraphs.
Development - the topic sentence is sufficiently explained with details, data, examples etc. to suit the purpose.
Developing paragraphs by reasoning of a line of argument
Depicts the writer's train of thoughts or the arrangement of their ideas, with the overall claim in the topic sentence and supporting claims or reasons with specific evidence