What does the text state is the most inherently interesting type of supporting material?

Here are the main points for a speech about the steps to undertake to treat a person with a burn

I. First, stop the burning process with cool running water. II. Second, look for blistering or blackened skin. III. Third, assess the size of the burn. If the burned area is larger than one arm or the whole abdomen, call 911 immediately. These main points are arranged in ____________ order. a. topical b. chronological c. spatial d. causal e. problem?solution

If an interview becomes sluggish or bogged down, the author advises the interviewer

to a. conclude the interview early b. ask more questions and make additional comments c. give the individual more time to formulate answers d. avoid interfering with the interview at all costs