Question

which of the following choices best uses precise and domain - specific language to convey its message?
it may sound gnarly, but these pretty cute birds are super spreaders of sickness when they release waste and when parts of their body touch things.
ornithologists say that these birds can leave behind gross diseases where they end up landing or using the bathroom.
research by bird scientists show that european starlings can spread things when they go to the bathroom or land on things.
studies conducted by ornithologists demonstrate that european starlings transmit disease both biologically through their waste and mechanically through their beaks and feet.

Explanation:

The fourth option uses precise terms like "ornithologists" (domain - specific for bird study), "transmit disease" (more precise than "spread sickness" or "leave behind gross diseases"), and differentiates between "biologically through their waste" and "mechanically through their beaks and feet" (specific ways of disease transmission). The first option has informal language like "gnarly" and "super spreaders of sickness". The second option has "gross diseases" which is less precise. The third option has "bird scientists" (less formal than "ornithologists") and "spread things" (very vague).

Answer:

Studies conducted by ornithologists demonstrate that European Starlings transmit disease both biologically through their waste and mechanically through their beaks and feet.