Answer: The scientists conclude that the striped snails are preferred by the birds.
Step-by-step explanation:
Predation is a process by which one organism (predator) feeds on the other organism (prey) by killing it.
Since, in the data provided 56% of the snails that are eaten by the bird are striped this clearly suggest that the striped snails are preferred by the birds as the frequency of striped snails becoming the prey is more than the solid snails.