The reasonable-basis component (Supplementary Material .05(a)) requires diligence proportionate to the complexity and risk of the security or strategy and the firm's familiarity with it, sufficient for the firm to grasp what the product can gain and lose. A recommendation made without that grasp breaches the rule even if it happens to suit the customer. New-product approval, product due-diligence files and representative training on complex products are the evidence.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.