To train a dog to lie down, Susan is using a biscuit as an intervention. First, she commands the dog to lie down at ten different times and measures how many times the dog actually lies down. Then,...

Extracted text: To train a dog to lie down, Susan is using a biscuit as an intervention. First, she commands the dog to lie down at ten different times and measures how many times the dog actually lies down. Then, she applies the intervention by commanding the dog to lie down twice every ten- minutes for a two-hour period. At the end of the two-hour period, the change due to treatment is measured. For the next 24 hours, she commands to lie down similar to before the intervention. What type of single subject research design is Susan using? а. ВАВ b. ABAB С. АВА d. ВСВС