Louise works in a local coffee shop with 4 locations across the island. Her boss, Tina, has owned the coffee shop for the last 32 years. Tina has recently heard about evidence-based management, and wants to use it to ensure she's making the best business decisions. Tina has noticed that she seems to be getting fewer and fewer applicants every time she posts a job opening, and wants to know if she should try different recruitment tactics. She turns to the published research to help her. Which of the following studies would be the strongest form of evidence? Question 2 options: a randomized controlled trial where researchers looked at different recruitment sources and the number of applicants for each source a longitudinal study where researchers looked at the number of applicants over time for different recruitment sources a case study on another local coffee shop's recruitment efforts a published opinion piece from a top recruitment researcher