Sally receives an unexpected notice that her water bill is late. She is perplexed because she is certain she paid that bill on time. She wants to avoid any late fees, so she knows she will need to start with one simple step. She will begin by going online to view her account, and incrementally work through a series of additional small steps until she resolves the problem. Sally is using a heuristic for problem solving called __________.
◦ an algorithm
◦ trial and error
◦ means-end analysis
◦ operational analysis