Scaffolding safety question

The textbook describes ten different types of scaffolding commonly used on construction worksites. Describe each, and discuss one of the key points from the textbook for each. Include why your selected key point is significant?
Your response must be at least 500 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have  accompanying citations.