However, when adaptation options are combined, the gains for farmers are significant. For example, the authors found that changing crops, when combined with water conservation strategies, delivers the largest gains of any of the adaptation options. The study concludes that, while adaptation to climate change based upon a portfolio of strategies is superior to single-option strategies, finding the right combination of interventions requires experimentation with different options to iterate the optimal course of action. The study also sheds light on the need to remove the structural barriers encountered by some groups when they attempted to access the full range of strategies, either because of poor socioeconomic status or weak access to financial resources, or owing to an absence of knowledge attributable to low levels of education or lack of information.