Which of the following research designs describe the characteristics of the market in a conclusive manner and uses closed-ended questions? Select one: a. Secondary b. Performance monitoring c. Comprehensive d. Causal e. Descriptive

Joe pays ann to mow his lawn and ann mows vanna's lawn by mistake. vanna peers out her window and sees ann mowing, yet says nothing to ann about her mistake since vanna needs to have her lawn mowed. when ann approaches vanna for payment, vanna refuses, arguing that she never asked ann to mow her lawn. under these circumstances, ann can recover payment from vanna under: