Answer: Decide on a controlling idea and create a topic sentence.
Explanation: 5-step process to paragraph development
step 1: Decide on a controlling idea and create a topic sentence. ...
step 2: Explain the controlling idea. ...
step 3: Give an example (or multiple examples)...
step 4: Explain the example(s) ...
step 5: Complete the paragraph's idea or transition into the next paragraph