Read the following passage and answer the item that follows. Your answer to this item should be based on the passage only.

Most drought-tolerant crop varieties grown today are engineered for a single stress trait, but future varieties bred for combined heat, drought and pest resistance will likely become the norm. So a crop-resilience strategy cannot be judged only against today's single-trait varieties; it needs to weigh a fuller set of factors, including who bears the cost of adoption, so that the technology's benefits are realised while its risks to smallholders are minimised. Given how central resilient varieties are to climate adaptation, excluding biotechnology from a national adaptation plan is not a realistic option. Domestic regulation of crop biotechnology must also account for trade commitments under international agreements.

Which one of the following statements best implies the crux of the passage?