Step-by-step explanation:
Based on the property of cohesion, Ladrus can predict that the water droplets will merge into one droplet when he gently moves one droplet toward the other. Cohesion is the tendency of water molecules to stick together due to the attractive forces between them. When two water droplets are brought close to each other, these attractive forces will cause them to combine and form a larger droplet rather than being repelled or freezing. So, the correct prediction is: "The droplets will merge into one droplet."