Answer:
C. Genetic testing
Step-by-step explanation:
The diagnostic tool in which Paul can use to trace hereditary problems in his herd is by genetic testing.
Genetic testing is used by medical specialists to diagnose problems related to the genes of an organism.
- Firstly, a physical examination is carried out on the subject.
- The personal medical history and family history of the herd is investigated.
- Laboratory tests are then carried out.