A specific wildflower is almost extinct, and the only way of saving it is by cross-pollinating it with a daisy, creating wildflower-daisy hybrids. While the hybrid would be very different from the original wildflower, we should still go through with the cross-pollination.

The argument’s premises describe what would happen if this cross-pollination occurs, but the conclusion then takes a further step by saying the cross-pollination should occur. We’re looking for some principle justifying this gap - that explains why having the cross-pollination occur would be better than just allowing the wildflower to go extinct.