The correct answer is option 1: webbed feet. Birds that swim in water typically have webbed feet, which means that their toes have skin between them. This adaptation allows them to paddle or swim more efficiently in water by increasing surface area. The webbing helps birds to propel themselves through the water and makes it easier for them to catch prey or find food underwater. Examples of birds with webbed feet include ducks, geese, swans, and certain types of seabirds. Option 2 (broad wings) is not necessarily a characteristic of birds that swim in water, as wingspan can vary among different bird species. While option 3 (long beaks) may be a characteristic of some aquatic birds, it is not specific to those that swim in water. Similarly, option 4 (toes with claws) is a feature shared by most bird species, not just those that swim in water.