Which of the following scenarios best illustrates the use of a disjunctive concept?
1
A birdwatcher categorizes an animal as a bird only if it has feathers, a beak, and the ability to fly.
2
A mechanic identifies a car problem based on a combination of engine noise, performance issues, and error codes.
3
A medical professional diagnoses a patient with a disease if they exhibit at least one of the following symptoms: fever, cough, or shortness of breath.
4
A teacher evaluates student performance by considering consistent attendance, class participation, and test scores.